use implementation, add min version of maven, gradle (#10571)

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

@@ -21,7 +21,12 @@
 Building the API client library requires:
 
 1. Java {{#java8}}1.8{{/java8}}{{^java8}}1.7{{/java8}}+
+{{#jersey2}}
+2. Maven (3.8.3+)/Gradle (7.2+)
+{{/jersey2}}
+{{^jersey2}}
 2. Maven/Gradle
+{{/jersey2}}
 
 ## Installation
 
@@ -57,7 +62,14 @@ Add this dependency to your project's POM:
 Add this dependency to your project's build file:
 
 ```groovy
-compile "{{{groupId}}}:{{{artifactId}}}:{{{artifactVersion}}}"
+  repositories {
+    mavenCentral()     // Needed if the '{{{artifactId}}}' jar has been published to maven central.
+    mavenLocal()       // Needed if the '{{{artifactId}}}' jar has been published to the local maven repo.
+  }
+
+  dependencies {
+     implementation "{{{groupId}}}:{{{artifactId}}}:{{{artifactVersion}}}"
+  }
 ```
 
 ### Others

samples/client/petstore/java/apache-httpclient/README.md

@@ -50,7 +50,14 @@ Add this dependency to your project's POM:
 Add this dependency to your project's build file:
 
 ```groovy
-compile "org.openapitools:petstore-apache-httpclient:1.0.0"
+  repositories {
+    mavenCentral()     // Needed if the 'petstore-apache-httpclient' jar has been published to maven central.
+    mavenLocal()       // Needed if the 'petstore-apache-httpclient' jar has been published to the local maven repo.
+  }
+
+  dependencies {
+     implementation "org.openapitools:petstore-apache-httpclient:1.0.0"
+  }
 ```
 
 ### Others

samples/client/petstore/java/google-api-client/README.md

@@ -50,7 +50,14 @@ Add this dependency to your project's POM:
 Add this dependency to your project's build file:
 
 ```groovy
-compile "org.openapitools:petstore-google-api-client:1.0.0"
+  repositories {
+    mavenCentral()     // Needed if the 'petstore-google-api-client' jar has been published to maven central.
+    mavenLocal()       // Needed if the 'petstore-google-api-client' jar has been published to the local maven repo.
+  }
+
+  dependencies {
+     implementation "org.openapitools:petstore-google-api-client:1.0.0"
+  }
 ```
 
 ### Others

samples/client/petstore/java/jersey1/README.md

@@ -50,7 +50,14 @@ Add this dependency to your project's POM:
 Add this dependency to your project's build file:
 
 ```groovy
-compile "org.openapitools:petstore-java-client-jersey1:1.0.0"
+  repositories {
+    mavenCentral()     // Needed if the 'petstore-java-client-jersey1' jar has been published to maven central.
+    mavenLocal()       // Needed if the 'petstore-java-client-jersey1' jar has been published to the local maven repo.
+  }
+
+  dependencies {
+     implementation "org.openapitools:petstore-java-client-jersey1:1.0.0"
+  }
 ```
 
 ### Others

samples/client/petstore/java/jersey2-java8-localdatetime/README.md

@@ -14,7 +14,7 @@ This spec is mainly for testing Petstore server and contains fake endpoints, mod
 Building the API client library requires:
 
 1. Java 1.8+
-2. Maven/Gradle
+2. Maven (3.8.3+)/Gradle (7.2+)
 
 ## Installation
 
@@ -50,7 +50,14 @@ Add this dependency to your project's POM:
 Add this dependency to your project's build file:
 
 ```groovy
-compile "org.openapitools:petstore-jersey2-java8-localdatetime:1.0.0"
+  repositories {
+    mavenCentral()     // Needed if the 'petstore-jersey2-java8-localdatetime' jar has been published to maven central.
+    mavenLocal()       // Needed if the 'petstore-jersey2-java8-localdatetime' jar has been published to the local maven repo.
+  }
+
+  dependencies {
+     implementation "org.openapitools:petstore-jersey2-java8-localdatetime:1.0.0"
+  }
 ```
 
 ### Others

samples/client/petstore/java/jersey2-java8/README.md

@@ -14,7 +14,7 @@ This spec is mainly for testing Petstore server and contains fake endpoints, mod
 Building the API client library requires:
 
 1. Java 1.8+
-2. Maven/Gradle
+2. Maven (3.8.3+)/Gradle (7.2+)
 
 ## Installation
 
@@ -50,7 +50,14 @@ Add this dependency to your project's POM:
 Add this dependency to your project's build file:
 
 ```groovy
-compile "org.openapitools:petstore-jersey2-java8:1.0.0"
+  repositories {
+    mavenCentral()     // Needed if the 'petstore-jersey2-java8' jar has been published to maven central.
+    mavenLocal()       // Needed if the 'petstore-jersey2-java8' jar has been published to the local maven repo.
+  }
+
+  dependencies {
+     implementation "org.openapitools:petstore-jersey2-java8:1.0.0"
+  }
 ```
 
 ### Others

samples/client/petstore/java/resteasy/README.md

@@ -50,7 +50,14 @@ Add this dependency to your project's POM:
 Add this dependency to your project's build file:
 
 ```groovy
-compile "org.openapitools:petstore-resteasy:1.0.0"
+  repositories {
+    mavenCentral()     // Needed if the 'petstore-resteasy' jar has been published to maven central.
+    mavenLocal()       // Needed if the 'petstore-resteasy' jar has been published to the local maven repo.
+  }
+
+  dependencies {
+     implementation "org.openapitools:petstore-resteasy:1.0.0"
+  }
 ```
 
 ### Others

samples/client/petstore/java/resttemplate-withXml/README.md

@@ -50,7 +50,14 @@ Add this dependency to your project's POM:
 Add this dependency to your project's build file:
 
 ```groovy
-compile "org.openapitools:petstore-resttemplate-withxml:1.0.0"
+  repositories {
+    mavenCentral()     // Needed if the 'petstore-resttemplate-withxml' jar has been published to maven central.
+    mavenLocal()       // Needed if the 'petstore-resttemplate-withxml' jar has been published to the local maven repo.
+  }
+
+  dependencies {
+     implementation "org.openapitools:petstore-resttemplate-withxml:1.0.0"
+  }
 ```
 
 ### Others

samples/client/petstore/java/resttemplate/README.md

@@ -50,7 +50,14 @@ Add this dependency to your project's POM:
 Add this dependency to your project's build file:
 
 ```groovy
-compile "org.openapitools:petstore-resttemplate:1.0.0"
+  repositories {
+    mavenCentral()     // Needed if the 'petstore-resttemplate' jar has been published to maven central.
+    mavenLocal()       // Needed if the 'petstore-resttemplate' jar has been published to the local maven repo.
+  }
+
+  dependencies {
+     implementation "org.openapitools:petstore-resttemplate:1.0.0"
+  }
 ```
 
 ### Others

samples/client/petstore/java/vertx-no-nullable/README.md

@@ -50,7 +50,14 @@ Add this dependency to your project's POM:
 Add this dependency to your project's build file:
 
 ```groovy
-compile "org.openapitools:petstore-vertx-no-nullable:1.0.0"
+  repositories {
+    mavenCentral()     // Needed if the 'petstore-vertx-no-nullable' jar has been published to maven central.
+    mavenLocal()       // Needed if the 'petstore-vertx-no-nullable' jar has been published to the local maven repo.
+  }
+
+  dependencies {
+     implementation "org.openapitools:petstore-vertx-no-nullable:1.0.0"
+  }
 ```
 
 ### Others

samples/client/petstore/java/vertx/README.md

@@ -50,7 +50,14 @@ Add this dependency to your project's POM:
 Add this dependency to your project's build file:
 
 ```groovy
-compile "org.openapitools:petstore-vertx:1.0.0"
+  repositories {
+    mavenCentral()     // Needed if the 'petstore-vertx' jar has been published to maven central.
+    mavenLocal()       // Needed if the 'petstore-vertx' jar has been published to the local maven repo.
+  }
+
+  dependencies {
+     implementation "org.openapitools:petstore-vertx:1.0.0"
+  }
 ```
 
 ### Others

samples/client/petstore/java/webclient-nulable-arrays/README.md

@@ -50,7 +50,14 @@ Add this dependency to your project's POM:
 Add this dependency to your project's build file:
 
 ```groovy
-compile "org.openapitools:petstore-webclient-nullable-arrays:v1"
+  repositories {
+    mavenCentral()     // Needed if the 'petstore-webclient-nullable-arrays' jar has been published to maven central.
+    mavenLocal()       // Needed if the 'petstore-webclient-nullable-arrays' jar has been published to the local maven repo.
+  }
+
+  dependencies {
+     implementation "org.openapitools:petstore-webclient-nullable-arrays:v1"
+  }
 ```
 
 ### Others

samples/client/petstore/java/webclient/README.md

@@ -50,7 +50,14 @@ Add this dependency to your project's POM:
 Add this dependency to your project's build file:
 
 ```groovy
-compile "org.openapitools:petstore-webclient:1.0.0"
+  repositories {
+    mavenCentral()     // Needed if the 'petstore-webclient' jar has been published to maven central.
+    mavenLocal()       // Needed if the 'petstore-webclient' jar has been published to the local maven repo.
+  }
+
+  dependencies {
+     implementation "org.openapitools:petstore-webclient:1.0.0"
+  }
 ```
 
 ### Others

samples/openapi3/client/extensions/x-auth-id-alias/java/jersey2-java8/README.md

@@ -14,7 +14,7 @@ This specification shows how to use x-auth-id-alias extension for API keys.
 Building the API client library requires:
 
 1. Java 1.7+
-2. Maven/Gradle
+2. Maven (3.8.3+)/Gradle (7.2+)
 
 ## Installation
 
@@ -50,7 +50,14 @@ Add this dependency to your project's POM:
 Add this dependency to your project's build file:
 
 ```groovy
-compile "org.openapitools:openapi3-extensions-x-auth-id-alias-jersey2-java8:1.0.0"
+  repositories {
+    mavenCentral()     // Needed if the 'openapi3-extensions-x-auth-id-alias-jersey2-java8' jar has been published to maven central.
+    mavenLocal()       // Needed if the 'openapi3-extensions-x-auth-id-alias-jersey2-java8' jar has been published to the local maven repo.
+  }
+
+  dependencies {
+     implementation "org.openapitools:openapi3-extensions-x-auth-id-alias-jersey2-java8:1.0.0"
+  }
 ```
 
 ### Others

samples/openapi3/client/petstore/java/jersey2-java8-special-characters/README.md

@@ -14,7 +14,7 @@ test
 Building the API client library requires:
 
 1. Java 1.8+
-2. Maven/Gradle
+2. Maven (3.8.3+)/Gradle (7.2+)
 
 ## Installation
 
@@ -50,7 +50,14 @@ Add this dependency to your project's POM:
 Add this dependency to your project's build file:
 
 ```groovy
-compile "org.openapitools:petstore-openapi3-jersey2-java8-special-characters:1.0.0"
+  repositories {
+    mavenCentral()     // Needed if the 'petstore-openapi3-jersey2-java8-special-characters' jar has been published to maven central.
+    mavenLocal()       // Needed if the 'petstore-openapi3-jersey2-java8-special-characters' jar has been published to the local maven repo.
+  }
+
+  dependencies {
+     implementation "org.openapitools:petstore-openapi3-jersey2-java8-special-characters:1.0.0"
+  }
 ```
 
 ### Others

samples/openapi3/client/petstore/java/jersey2-java8/README.md

@@ -14,7 +14,7 @@ This spec is mainly for testing Petstore server and contains fake endpoints, mod
 Building the API client library requires:
 
 1. Java 1.8+
-2. Maven/Gradle
+2. Maven (3.8.3+)/Gradle (7.2+)
 
 ## Installation
 
@@ -50,7 +50,14 @@ Add this dependency to your project's POM:
 Add this dependency to your project's build file:
 
 ```groovy
-compile "org.openapitools:petstore-openapi3-jersey2-java8:1.0.0"
+  repositories {
+    mavenCentral()     // Needed if the 'petstore-openapi3-jersey2-java8' jar has been published to maven central.
+    mavenLocal()       // Needed if the 'petstore-openapi3-jersey2-java8' jar has been published to the local maven repo.
+  }
+
+  dependencies {
+     implementation "org.openapitools:petstore-openapi3-jersey2-java8:1.0.0"
+  }
 ```
 
 ### Others