immutable Pair, better performant HttpBearerAuth, consistent code-style (#20743)

* make Pair immutable and in google-code-style

* apply google-code-style to JavaTimeFormatter (to make it consistent with most other auto-generated java)

* move upperCaseBearer to ctor (scheme is final and private; only needs to be fixed once); also replaced Optional with ternary (perf and cleaner code)

* apply google-code-style to Authentication to make it consistent with rest of auth code

* fresh samples

modules/openapi-generator/src/main/resources/Java/JavaTimeFormatter.mustache

@@ -11,11 +11,11 @@ import java.time.format.DateTimeParseException;
  */
 {{>generatedAnnotation}}
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -24,6 +24,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -32,6 +33,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -42,8 +44,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

modules/openapi-generator/src/main/resources/Java/Pair.mustache

@@ -4,28 +4,12 @@ package {{invokerPackage}};
 
 {{>generatedAnnotation}}
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -36,11 +20,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

modules/openapi-generator/src/main/resources/Java/auth/HttpBearerAuth.mustache

@@ -6,7 +6,6 @@ import {{invokerPackage}}.Pair;
 
 import java.util.List;
 import java.util.Map;
-import java.util.Optional;
 import java.util.function.Supplier;
 
 {{>generatedAnnotation}}
@@ -15,7 +14,7 @@ public class HttpBearerAuth implements Authentication {
   private Supplier<String> tokenSupplier;
 
   public HttpBearerAuth(String scheme) {
-    this.scheme = scheme;
+    this.scheme = upperCaseBearer(scheme);
   }
 
   /**
@@ -47,15 +46,14 @@ public class HttpBearerAuth implements Authentication {
 
   @Override
   public void applyToParams(List<Pair> queryParams, Map<String, String> headerParams, Map<String, String> cookieParams) {
-    String bearerToken = Optional.ofNullable(tokenSupplier).map(Supplier::get).orElse(null);
+    String bearerToken = tokenSupplier != null ? tokenSupplier.get() : null;
     if (bearerToken == null) {
       return;
     }
-
+    headerParams.put("Authorization", (scheme != null ? scheme + " " : "") + bearerToken);
-    headerParams.put("Authorization", (scheme != null ? upperCaseBearer(scheme) + " " : "") + bearerToken);
   }
 
   private static String upperCaseBearer(String scheme) {
-    return ("bearer".equalsIgnoreCase(scheme)) ? "Bearer" : scheme;
+    return "bearer".equalsIgnoreCase(scheme) ? "Bearer" : scheme;
   }
 }

samples/client/echo_api/java/apache-httpclient/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/echo_api/java/apache-httpclient/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/echo_api/java/apache-httpclient/src/main/java/org/openapitools/client/auth/HttpBearerAuth.java

@@ -17,7 +17,6 @@ import org.openapitools.client.Pair;
 
 import java.util.List;
 import java.util.Map;
-import java.util.Optional;
 import java.util.function.Supplier;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
@@ -26,7 +25,7 @@ public class HttpBearerAuth implements Authentication {
   private Supplier<String> tokenSupplier;
 
   public HttpBearerAuth(String scheme) {
-    this.scheme = scheme;
+    this.scheme = upperCaseBearer(scheme);
   }
 
   /**
@@ -58,15 +57,14 @@ public class HttpBearerAuth implements Authentication {
 
   @Override
   public void applyToParams(List<Pair> queryParams, Map<String, String> headerParams, Map<String, String> cookieParams) {
-    String bearerToken = Optional.ofNullable(tokenSupplier).map(Supplier::get).orElse(null);
+    String bearerToken = tokenSupplier != null ? tokenSupplier.get() : null;
     if (bearerToken == null) {
       return;
     }
-
+    headerParams.put("Authorization", (scheme != null ? scheme + " " : "") + bearerToken);
-    headerParams.put("Authorization", (scheme != null ? upperCaseBearer(scheme) + " " : "") + bearerToken);
   }
 
   private static String upperCaseBearer(String scheme) {
-    return ("bearer".equalsIgnoreCase(scheme)) ? "Bearer" : scheme;
+    return "bearer".equalsIgnoreCase(scheme) ? "Bearer" : scheme;
   }
 }

samples/client/echo_api/java/native/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/echo_api/java/okhttp-gson-user-defined-templates/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/echo_api/java/okhttp-gson/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/echo_api/java/restclient/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @jakarta.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/echo_api/java/resteasy/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/echo_api/java/resteasy/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/echo_api/java/resteasy/src/main/java/org/openapitools/client/auth/HttpBearerAuth.java

@@ -17,7 +17,6 @@ import org.openapitools.client.Pair;
 
 import java.util.List;
 import java.util.Map;
-import java.util.Optional;
 import java.util.function.Supplier;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
@@ -26,7 +25,7 @@ public class HttpBearerAuth implements Authentication {
   private Supplier<String> tokenSupplier;
 
   public HttpBearerAuth(String scheme) {
-    this.scheme = scheme;
+    this.scheme = upperCaseBearer(scheme);
   }
 
   /**
@@ -58,15 +57,14 @@ public class HttpBearerAuth implements Authentication {
 
   @Override
   public void applyToParams(List<Pair> queryParams, Map<String, String> headerParams, Map<String, String> cookieParams) {
-    String bearerToken = Optional.ofNullable(tokenSupplier).map(Supplier::get).orElse(null);
+    String bearerToken = tokenSupplier != null ? tokenSupplier.get() : null;
     if (bearerToken == null) {
       return;
     }
-
+    headerParams.put("Authorization", (scheme != null ? scheme + " " : "") + bearerToken);
-    headerParams.put("Authorization", (scheme != null ? upperCaseBearer(scheme) + " " : "") + bearerToken);
   }
 
   private static String upperCaseBearer(String scheme) {
-    return ("bearer".equalsIgnoreCase(scheme)) ? "Bearer" : scheme;
+    return "bearer".equalsIgnoreCase(scheme) ? "Bearer" : scheme;
   }
 }

samples/client/echo_api/java/resttemplate/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/others/java/jersey2-oneOf-Mixed/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/others/java/jersey2-oneOf-Mixed/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/others/java/jersey2-oneOf-duplicates/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/others/java/jersey2-oneOf-duplicates/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/others/java/okhttp-gson-oneOf-array/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/others/java/okhttp-gson-oneOf/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/others/java/okhttp-gson-streaming/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/others/java/restclient-useAbstractionForFiles/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @jakarta.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/others/java/resttemplate-list-schema-validation/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/others/java/resttemplate-useAbstractionForFiles/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/others/java/webclient-useAbstractionForFiles/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/auth/HttpBearerAuth.java

@@ -17,7 +17,6 @@ import org.openapitools.client.Pair;
 
 import java.util.List;
 import java.util.Map;
-import java.util.Optional;
 import java.util.function.Supplier;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
@@ -26,7 +25,7 @@ public class HttpBearerAuth implements Authentication {
   private Supplier<String> tokenSupplier;
 
   public HttpBearerAuth(String scheme) {
-    this.scheme = scheme;
+    this.scheme = upperCaseBearer(scheme);
   }
 
   /**
@@ -58,15 +57,14 @@ public class HttpBearerAuth implements Authentication {
 
   @Override
   public void applyToParams(List<Pair> queryParams, Map<String, String> headerParams, Map<String, String> cookieParams) {
-    String bearerToken = Optional.ofNullable(tokenSupplier).map(Supplier::get).orElse(null);
+    String bearerToken = tokenSupplier != null ? tokenSupplier.get() : null;
     if (bearerToken == null) {
       return;
     }
-
+    headerParams.put("Authorization", (scheme != null ? scheme + " " : "") + bearerToken);
-    headerParams.put("Authorization", (scheme != null ? upperCaseBearer(scheme) + " " : "") + bearerToken);
   }
 
   private static String upperCaseBearer(String scheme) {
-    return ("bearer".equalsIgnoreCase(scheme)) ? "Bearer" : scheme;
+    return "bearer".equalsIgnoreCase(scheme) ? "Bearer" : scheme;
   }
 }

samples/client/petstore/java/jersey2-java8-localdatetime/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/jersey2-java8-localdatetime/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/jersey3-oneOf/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @jakarta.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/jersey3-oneOf/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @jakarta.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/jersey3/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @jakarta.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/jersey3/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @jakarta.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/native-jakarta/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @jakarta.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/native/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/okhttp-gson-3.1-duplicated-operationid/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/okhttp-gson-3.1/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/okhttp-gson-awsv4signature/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/okhttp-gson-group-parameter/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/okhttp-gson-nullable-required/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/okhttp-gson-swagger1/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/okhttp-gson-swagger2/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/restclient-nullable-arrays/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @jakarta.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/restclient-swagger2/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @jakarta.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/restclient-useSingleRequestParameter/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @jakarta.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/restclient/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @jakarta.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/resteasy/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/resteasy/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/resteasy/src/main/java/org/openapitools/client/auth/HttpBearerAuth.java

@@ -17,7 +17,6 @@ import org.openapitools.client.Pair;
 
 import java.util.List;
 import java.util.Map;
-import java.util.Optional;
 import java.util.function.Supplier;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
@@ -26,7 +25,7 @@ public class HttpBearerAuth implements Authentication {
   private Supplier<String> tokenSupplier;
 
   public HttpBearerAuth(String scheme) {
-    this.scheme = scheme;
+    this.scheme = upperCaseBearer(scheme);
   }
 
   /**
@@ -58,15 +57,14 @@ public class HttpBearerAuth implements Authentication {
 
   @Override
   public void applyToParams(List<Pair> queryParams, Map<String, String> headerParams, Map<String, String> cookieParams) {
-    String bearerToken = Optional.ofNullable(tokenSupplier).map(Supplier::get).orElse(null);
+    String bearerToken = tokenSupplier != null ? tokenSupplier.get() : null;
     if (bearerToken == null) {
       return;
     }
-
+    headerParams.put("Authorization", (scheme != null ? scheme + " " : "") + bearerToken);
-    headerParams.put("Authorization", (scheme != null ? upperCaseBearer(scheme) + " " : "") + bearerToken);
   }
 
   private static String upperCaseBearer(String scheme) {
-    return ("bearer".equalsIgnoreCase(scheme)) ? "Bearer" : scheme;
+    return "bearer".equalsIgnoreCase(scheme) ? "Bearer" : scheme;
   }
 }

samples/client/petstore/java/resttemplate-jakarta/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @jakarta.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/resttemplate-swagger1/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/resttemplate-swagger2/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/resttemplate-withXml/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/resttemplate/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @jakarta.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/client/petstore/java/webclient-jakarta/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @jakarta.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/webclient-nullable-arrays/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/webclient-swagger2/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/webclient-useSingleRequestParameter/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/openapi3/client/extensions/x-auth-id-alias/java/jersey2-java8/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/openapi3/client/extensions/x-auth-id-alias/java/jersey2-java8/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/openapi3/client/petstore/java/jersey2-java8-special-characters/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/openapi3/client/petstore/java/jersey2-java8-special-characters/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/openapi3/client/petstore/java/jersey2-java8-swagger1/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/openapi3/client/petstore/java/jersey2-java8-swagger1/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/openapi3/client/petstore/java/jersey2-java8-swagger2/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/openapi3/client/petstore/java/jersey2-java8-swagger2/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }

samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -22,11 +22,11 @@ import java.time.format.DateTimeParseException;
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class JavaTimeFormatter {
-
   private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
 
   /**
    * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @return DateTimeFormatter
    */
   public DateTimeFormatter getOffsetDateTimeFormatter() {
@@ -35,6 +35,7 @@ public class JavaTimeFormatter {
 
   /**
    * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+   *
    * @param offsetDateTimeFormatter {@code DateTimeFormatter}
    */
   public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
@@ -43,6 +44,7 @@ public class JavaTimeFormatter {
 
   /**
    * Parse the given string into {@code OffsetDateTime} object.
+   *
    * @param str String
    * @return {@code OffsetDateTime}
    */
@@ -53,8 +55,10 @@ public class JavaTimeFormatter {
       throw new RuntimeException(e);
     }
   }
+
   /**
    * Format the given {@code OffsetDateTime} object into string.
+   *
    * @param offsetDateTime {@code OffsetDateTime}
    * @return {@code OffsetDateTime} in string format
    */

samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/Pair.java

@@ -15,28 +15,12 @@ package org.openapitools.client;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.15.0-SNAPSHOT")
 public class Pair {
-    private String name = "";
+  private final String name;
-    private String value = "";
+  private final String value;
 
   public Pair(String name, String value) {
-        setName(name);
+    this.name = isValidString(name) ? name : "";
-        setValue(value);
+    this.value = isValidString(value) ? value : "";
-    }
-
-    private void setName(String name) {
-        if (!isValidString(name)) {
-            return;
-        }
-
-        this.name = name;
-    }
-
-    private void setValue(String value) {
-        if (!isValidString(value)) {
-            return;
-        }
-
-        this.value = value;
   }
 
   public String getName() {
@@ -47,11 +31,7 @@ public class Pair {
     return this.value;
   }
 
-    private boolean isValidString(String arg) {
+  private static boolean isValidString(String arg) {
-        if (arg == null) {
+    return arg != null;
-            return false;
-        }
-
-        return true;
   }
 }