diff --git a/modules/swagger-codegen/src/main/resources/Java/ApiClient.mustache b/modules/swagger-codegen/src/main/resources/Java/ApiClient.mustache
index 6668c30d8bf3..9fe8d556135d 100644
--- a/modules/swagger-codegen/src/main/resources/Java/ApiClient.mustache
+++ b/modules/swagger-codegen/src/main/resources/Java/ApiClient.mustache
@@ -465,7 +465,7 @@ public class ApiClient {
    */
   public boolean isJsonMime(String mime) {
     String jsonMime = "(?i)^(application/json|[^;/ \t]+/[^;/ \t]+[+]json)[ \t]*(;.*)?$";
-    return mime != null && mime.matches(jsonMime);
+    return mime != null && (mime.matches(jsonMime) || mime.equalsIgnoreCase("application/json-patch+json"));
   }
 
   /**
diff --git a/modules/swagger-codegen/src/main/resources/Java/libraries/jersey2/ApiClient.mustache b/modules/swagger-codegen/src/main/resources/Java/libraries/jersey2/ApiClient.mustache
index 759e6708aa19..b8a5f95d9d1b 100644
--- a/modules/swagger-codegen/src/main/resources/Java/libraries/jersey2/ApiClient.mustache
+++ b/modules/swagger-codegen/src/main/resources/Java/libraries/jersey2/ApiClient.mustache
@@ -443,7 +443,7 @@ public class ApiClient {
    */
   public boolean isJsonMime(String mime) {
     String jsonMime = "(?i)^(application/json|[^;/ \t]+/[^;/ \t]+[+]json)[ \t]*(;.*)?$";
-    return mime != null && mime.matches(jsonMime);
+    return mime != null && (mime.matches(jsonMime) || mime.equalsIgnoreCase("application/json-patch+json"));
   }
 
   /**
diff --git a/samples/client/petstore/java/jersey1/pom.xml b/samples/client/petstore/java/jersey1/pom.xml
index f15b614e1aa4..2347df728d34 100644
--- a/samples/client/petstore/java/jersey1/pom.xml
+++ b/samples/client/petstore/java/jersey1/pom.xml
@@ -235,6 +235,8 @@
       <version>2.2</version>
     </dependency>
 
+
+
     <!-- test dependencies -->
     <dependency>
       <groupId>junit</groupId>
diff --git a/samples/client/petstore/java/jersey1/src/main/java/io/swagger/client/ApiClient.java b/samples/client/petstore/java/jersey1/src/main/java/io/swagger/client/ApiClient.java
index b9dbb9117b5d..7c98c2d74a81 100644
--- a/samples/client/petstore/java/jersey1/src/main/java/io/swagger/client/ApiClient.java
+++ b/samples/client/petstore/java/jersey1/src/main/java/io/swagger/client/ApiClient.java
@@ -466,7 +466,7 @@ public class ApiClient {
    */
   public boolean isJsonMime(String mime) {
     String jsonMime = "(?i)^(application/json|[^;/ \t]+/[^;/ \t]+[+]json)[ \t]*(;.*)?$";
-    return mime != null && mime.matches(jsonMime);
+    return mime != null && (mime.matches(jsonMime) || mime.equalsIgnoreCase("application/json-patch+json"));
   }
 
   /**
diff --git a/samples/client/petstore/java/jersey2-java6/src/main/java/io/swagger/client/ApiClient.java b/samples/client/petstore/java/jersey2-java6/src/main/java/io/swagger/client/ApiClient.java
index 31c5d60d626a..938b7521e6fa 100644
--- a/samples/client/petstore/java/jersey2-java6/src/main/java/io/swagger/client/ApiClient.java
+++ b/samples/client/petstore/java/jersey2-java6/src/main/java/io/swagger/client/ApiClient.java
@@ -437,7 +437,7 @@ public class ApiClient {
    */
   public boolean isJsonMime(String mime) {
     String jsonMime = "(?i)^(application/json|[^;/ \t]+/[^;/ \t]+[+]json)[ \t]*(;.*)?$";
-    return mime != null && mime.matches(jsonMime);
+    return mime != null && (mime.matches(jsonMime) || mime.equalsIgnoreCase("application/json-patch+json"));
   }
 
   /**
diff --git a/samples/client/petstore/java/jersey2-java8/src/main/java/io/swagger/client/ApiClient.java b/samples/client/petstore/java/jersey2-java8/src/main/java/io/swagger/client/ApiClient.java
index d3e9924e8eb6..0995fbc3df7c 100644
--- a/samples/client/petstore/java/jersey2-java8/src/main/java/io/swagger/client/ApiClient.java
+++ b/samples/client/petstore/java/jersey2-java8/src/main/java/io/swagger/client/ApiClient.java
@@ -438,7 +438,7 @@ public class ApiClient {
    */
   public boolean isJsonMime(String mime) {
     String jsonMime = "(?i)^(application/json|[^;/ \t]+/[^;/ \t]+[+]json)[ \t]*(;.*)?$";
-    return mime != null && mime.matches(jsonMime);
+    return mime != null && (mime.matches(jsonMime) || mime.equalsIgnoreCase("application/json-patch+json"));
   }
 
   /**
diff --git a/samples/client/petstore/java/jersey2/src/main/java/io/swagger/client/ApiClient.java b/samples/client/petstore/java/jersey2/src/main/java/io/swagger/client/ApiClient.java
index d3e9924e8eb6..0995fbc3df7c 100644
--- a/samples/client/petstore/java/jersey2/src/main/java/io/swagger/client/ApiClient.java
+++ b/samples/client/petstore/java/jersey2/src/main/java/io/swagger/client/ApiClient.java
@@ -438,7 +438,7 @@ public class ApiClient {
    */
   public boolean isJsonMime(String mime) {
     String jsonMime = "(?i)^(application/json|[^;/ \t]+/[^;/ \t]+[+]json)[ \t]*(;.*)?$";
-    return mime != null && mime.matches(jsonMime);
+    return mime != null && (mime.matches(jsonMime) || mime.equalsIgnoreCase("application/json-patch+json"));
   }
 
   /**
diff --git a/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/io/swagger/client/ApiClient.java b/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/io/swagger/client/ApiClient.java
index 7af43d0eafce..21729ee04b24 100644
--- a/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/io/swagger/client/ApiClient.java
+++ b/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/io/swagger/client/ApiClient.java
@@ -751,7 +751,7 @@ public class ApiClient {
      */
     public boolean isJsonMime(String mime) {
       String jsonMime = "(?i)^(application/json|[^;/ \t]+/[^;/ \t]+[+]json)[ \t]*(;.*)?$";
-      return mime != null && mime.matches(jsonMime);
+      return mime != null && (mime.matches(jsonMime) || mime.equalsIgnoreCase("application/json-patch+json"));
     }
 
     /**
diff --git a/samples/client/petstore/java/retrofit/pom.xml b/samples/client/petstore/java/retrofit/pom.xml
index 069c8bb3ed2e..cb50ddea34d4 100644
--- a/samples/client/petstore/java/retrofit/pom.xml
+++ b/samples/client/petstore/java/retrofit/pom.xml
@@ -203,6 +203,7 @@
       <version>${jodatime-version}</version>
   </dependency>
 
+
     <!-- test dependencies -->
     <dependency>
       <groupId>junit</groupId>
diff --git a/samples/client/petstore/java/retrofit2-play24/pom.xml b/samples/client/petstore/java/retrofit2-play24/pom.xml
index a1e7f6eeff29..6693f615e655 100644
--- a/samples/client/petstore/java/retrofit2-play24/pom.xml
+++ b/samples/client/petstore/java/retrofit2-play24/pom.xml
@@ -232,6 +232,7 @@
         <version>${play-version}</version>
     </dependency>
 
+
     <!-- test dependencies -->
     <dependency>
       <groupId>junit</groupId>
diff --git a/samples/client/petstore/java/retrofit2/pom.xml b/samples/client/petstore/java/retrofit2/pom.xml
index ae1a4b573d80..ee302c6300de 100644
--- a/samples/client/petstore/java/retrofit2/pom.xml
+++ b/samples/client/petstore/java/retrofit2/pom.xml
@@ -201,6 +201,7 @@
     </dependency>
 
 
+
     <!-- test dependencies -->
     <dependency>
       <groupId>junit</groupId>
diff --git a/samples/client/petstore/java/retrofit2rx/pom.xml b/samples/client/petstore/java/retrofit2rx/pom.xml
index 668d38623fcf..1498dc252f85 100644
--- a/samples/client/petstore/java/retrofit2rx/pom.xml
+++ b/samples/client/petstore/java/retrofit2rx/pom.xml
@@ -211,6 +211,7 @@
     </dependency>
 
 
+
     <!-- test dependencies -->
     <dependency>
       <groupId>junit</groupId>
diff --git a/samples/client/petstore/java/retrofit2rx2/pom.xml b/samples/client/petstore/java/retrofit2rx2/pom.xml
index cd806e757b01..34d054b1fdcc 100644
--- a/samples/client/petstore/java/retrofit2rx2/pom.xml
+++ b/samples/client/petstore/java/retrofit2rx2/pom.xml
@@ -211,6 +211,7 @@
     </dependency>
 
 
+
     <!-- test dependencies -->
     <dependency>
       <groupId>junit</groupId>