fix: Add static modifier to inner class

modules/openapi-generator/src/main/resources/Java/libraries/microprofile/api.mustache

@@ -77,7 +77,7 @@ public interface {{classname}}  {
 {{#useSingleRequestParameter}}
     {{^vendorExtensions.x-java-is-response-void}}{{#microprofileMutiny}}Uni<{{{returnType}}}>{{/microprofileMutiny}}{{^microprofileMutiny}}{{{returnType}}}{{/microprofileMutiny}}{{/vendorExtensions.x-java-is-response-void}}{{#vendorExtensions.x-java-is-response-void}}{{#microprofileMutiny}}Uni<Void>{{/microprofileMutiny}}{{^microprofileMutiny}}void{{/microprofileMutiny}}{{/vendorExtensions.x-java-is-response-void}} {{nickname}}({{#hasNonBodyParams}}@BeanParam {{operationIdCamelCase}}Request request{{/hasNonBodyParams}}{{#bodyParams}}{{#hasNonBodyParams}}, {{/hasNonBodyParams}}{{>bodyParams}}{{/bodyParams}}) throws ApiException, ProcessingException;
     {{#hasNonBodyParams}}
-    public class {{operationIdCamelCase}}Request {
+    public static class {{operationIdCamelCase}}Request {
 
         {{#queryParams}}
         private {{>queryParams}};

modules/openapi-generator/src/main/resources/Java/libraries/webclient/api.mustache

@@ -54,7 +54,7 @@ public class {{classname}} {
     }
 
     {{#operation}}{{#useSingleRequestParameter}}{{#hasParams}}{{^hasSingleParam}}
-    public class {{#lambda.titlecase}}{{operationId}}{{/lambda.titlecase}}Request {
+    public static class {{#lambda.titlecase}}{{operationId}}{{/lambda.titlecase}}Request {
     {{#allParams}}
         private final {{#isFile}}{{#useAbstractionForFiles}}{{#collectionFormat}}java.util.Collection<org.springframework.core.io.AbstractResource>{{/collectionFormat}}{{^collectionFormat}}org.springframework.core.io.AbstractResource{{/collectionFormat}}{{/useAbstractionForFiles}}{{^useAbstractionForFiles}}{{{dataType}}}{{/useAbstractionForFiles}}{{/isFile}}{{^isFile}}{{{dataType}}}{{/isFile}} {{paramName}};
     {{/allParams}}

modules/openapi-generator/src/test/java/org/openapitools/codegen/java/JavaClientCodegenTest.java

@@ -3259,7 +3259,7 @@ public void testDuplicatedOperationId() {
 
         TestUtils.assertFileContains(
                 output.resolve("src/main/java/xyz/abcdef/api/PetApi.java"),
-                "public class DeletePetRequest {",
+                "public static class DeletePetRequest {",
                 "DeletePetRequest(Long petId, String apiKey)",
                 "Long petId()",
                 "String apiKey()",

samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/api/PetApi.java

@@ -63,7 +63,7 @@ public interface PetApi  {
     @DELETE
     @Path("/{petId}")
     void deletePet(@BeanParam DeletePetRequest request) throws ApiException, ProcessingException;
-    public class DeletePetRequest {
+    public static class DeletePetRequest {
 
         private @HeaderParam("api_key")  String apiKey;
         private @PathParam("petId") Long petId;
@@ -105,7 +105,7 @@ public DeletePetRequest apiKey(String apiKey) {
     @Path("/findByStatus")
     @Produces({ "application/xml", "application/json" })
     List<Pet> findPetsByStatus(@BeanParam FindPetsByStatusRequest request) throws ApiException, ProcessingException;
-    public class FindPetsByStatusRequest {
+    public static class FindPetsByStatusRequest {
 
         private @QueryParam("status") List<String> status;
 
@@ -139,7 +139,7 @@ public FindPetsByStatusRequest status(List<String> status) {
     @Path("/findByTags")
     @Produces({ "application/xml", "application/json" })
     List<Pet> findPetsByTags(@BeanParam FindPetsByTagsRequest request) throws ApiException, ProcessingException;
-    public class FindPetsByTagsRequest {
+    public static class FindPetsByTagsRequest {
 
         private @QueryParam("tags") List<String> tags;
 
@@ -171,7 +171,7 @@ public FindPetsByTagsRequest tags(List<String> tags) {
     @Path("/{petId}")
     @Produces({ "application/xml", "application/json" })
     Pet getPetById(@BeanParam GetPetByIdRequest request) throws ApiException, ProcessingException;
-    public class GetPetByIdRequest {
+    public static class GetPetByIdRequest {
 
         private @PathParam("petId") Long petId;
 
@@ -215,7 +215,7 @@ public GetPetByIdRequest petId(Long petId) {
     @Path("/{petId}")
     @Consumes({ "application/x-www-form-urlencoded" })
     void updatePetWithForm(@BeanParam UpdatePetWithFormRequest request) throws ApiException, ProcessingException;
-    public class UpdatePetWithFormRequest {
+    public static class UpdatePetWithFormRequest {
 
         private @PathParam("petId") Long petId;
         private @Multipart(value = "name", required = false)  String name;
@@ -268,7 +268,7 @@ public UpdatePetWithFormRequest status(String status) {
     @Consumes({ "multipart/form-data" })
     @Produces({ "application/json" })
     ModelApiResponse uploadFile(@BeanParam UploadFileRequest request) throws ApiException, ProcessingException;
-    public class UploadFileRequest {
+    public static class UploadFileRequest {
 
         private @PathParam("petId") Long petId;
         private @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata;

samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/api/StoreApi.java

@@ -49,7 +49,7 @@ public interface StoreApi  {
     @DELETE
     @Path("/order/{orderId}")
     void deleteOrder(@BeanParam DeleteOrderRequest request) throws ApiException, ProcessingException;
-    public class DeleteOrderRequest {
+    public static class DeleteOrderRequest {
 
         private @PathParam("orderId") String orderId;
 
@@ -92,7 +92,7 @@ public DeleteOrderRequest orderId(String orderId) {
     @Path("/order/{orderId}")
     @Produces({ "application/xml", "application/json" })
     Order getOrderById(@BeanParam GetOrderByIdRequest request) throws ApiException, ProcessingException;
-    public class GetOrderByIdRequest {
+    public static class GetOrderByIdRequest {
 
         private @PathParam("orderId") Long orderId;
 

samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/api/UserApi.java

@@ -83,7 +83,7 @@ public interface UserApi  {
     @DELETE
     @Path("/{username}")
     void deleteUser(@BeanParam DeleteUserRequest request) throws ApiException, ProcessingException;
-    public class DeleteUserRequest {
+    public static class DeleteUserRequest {
 
         private @PathParam("username") String username;
 
@@ -115,7 +115,7 @@ public DeleteUserRequest username(String username) {
     @Path("/{username}")
     @Produces({ "application/xml", "application/json" })
     User getUserByName(@BeanParam GetUserByNameRequest request) throws ApiException, ProcessingException;
-    public class GetUserByNameRequest {
+    public static class GetUserByNameRequest {
 
         private @PathParam("username") String username;
 
@@ -147,7 +147,7 @@ public GetUserByNameRequest username(String username) {
     @Path("/login")
     @Produces({ "application/xml", "application/json" })
     String loginUser(@BeanParam LoginUserRequest request) throws ApiException, ProcessingException;
-    public class LoginUserRequest {
+    public static class LoginUserRequest {
 
         private @QueryParam("username") String username;
         private @QueryParam("password") String password;
@@ -199,7 +199,7 @@ public LoginUserRequest password(String password) {
     @Path("/{username}")
     @Consumes({ "application/json" })
     void updateUser(@BeanParam UpdateUserRequest request, User user) throws ApiException, ProcessingException;
-    public class UpdateUserRequest {
+    public static class UpdateUserRequest {
 
         private @PathParam("username") String username;
 

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

@@ -191,7 +191,7 @@ public ResponseSpec fakeHealthGetWithResponseSpec() throws WebClientResponseExce
         return fakeHealthGetRequestCreation();
     }
 
-    public class FakeHttpSignatureTestRequest {
+    public static class FakeHttpSignatureTestRequest {
         private final Pet pet;
         private final String query1;
         private final String header1;
@@ -900,7 +900,7 @@ public ResponseSpec testBodyWithFileSchemaWithResponseSpec(FileSchemaTestClass f
         return testBodyWithFileSchemaRequestCreation(fileSchemaTestClass);
     }
 
-    public class TestBodyWithQueryParamsRequest {
+    public static class TestBodyWithQueryParamsRequest {
         private final String query;
         private final User user;
 
@@ -1107,7 +1107,7 @@ public ResponseSpec testClientModelWithResponseSpec(Client client) throws WebCli
         return testClientModelRequestCreation(client);
     }
 
-    public class TestEndpointParametersRequest {
+    public static class TestEndpointParametersRequest {
         private final BigDecimal number;
         private final Double _double;
         private final String patternWithoutDelimiter;
@@ -1389,7 +1389,7 @@ public ResponseSpec testEndpointParametersWithResponseSpec(BigDecimal number, Do
         return testEndpointParametersRequestCreation(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback);
     }
 
-    public class TestEnumParametersRequest {
+    public static class TestEnumParametersRequest {
         private final List<String> enumHeaderStringArray;
         private final String enumHeaderString;
         private final List<String> enumQueryStringArray;
@@ -1597,7 +1597,7 @@ public ResponseSpec testEnumParametersWithResponseSpec(List<String> enumHeaderSt
         return testEnumParametersRequestCreation(enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble, enumQueryModelArray, enumFormStringArray, enumFormString);
     }
 
-    public class TestGroupParametersRequest {
+    public static class TestGroupParametersRequest {
         private final Integer requiredStringGroup;
         private final Boolean requiredBooleanGroup;
         private final Long requiredInt64Group;
@@ -1915,7 +1915,7 @@ public ResponseSpec testInlineFreeformAdditionalPropertiesWithResponseSpec(TestI
         return testInlineFreeformAdditionalPropertiesRequestCreation(testInlineFreeformAdditionalPropertiesRequest);
     }
 
-    public class TestJsonFormDataRequest {
+    public static class TestJsonFormDataRequest {
         private final String param;
         private final String param2;
 
@@ -2120,7 +2120,7 @@ public ResponseSpec testNullableWithResponseSpec(ChildWithNullable childWithNull
         return testNullableRequestCreation(childWithNullable);
     }
 
-    public class TestQueryParameterCollectionFormatRequest {
+    public static class TestQueryParameterCollectionFormatRequest {
         private final List<String> pipe;
         private final List<String> ioutil;
         private final List<String> http;

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

@@ -124,7 +124,7 @@ public ResponseSpec addPetWithResponseSpec(Pet pet) throws WebClientResponseExce
         return addPetRequestCreation(pet);
     }
 
-    public class DeletePetRequest {
+    public static class DeletePetRequest {
         private final Long petId;
         private final String apiKey;
 
@@ -585,7 +585,7 @@ public ResponseSpec updatePetWithResponseSpec(Pet pet) throws WebClientResponseE
         return updatePetRequestCreation(pet);
     }
 
-    public class UpdatePetWithFormRequest {
+    public static class UpdatePetWithFormRequest {
         private final Long petId;
         private final String name;
         private final String status;
@@ -734,7 +734,7 @@ public ResponseSpec updatePetWithFormWithResponseSpec(Long petId, String name, S
         return updatePetWithFormRequestCreation(petId, name, status);
     }
 
-    public class UploadFileRequest {
+    public static class UploadFileRequest {
         private final Long petId;
         private final String additionalMetadata;
         private final File _file;
@@ -883,7 +883,7 @@ public ResponseSpec uploadFileWithResponseSpec(Long petId, String additionalMeta
         return uploadFileRequestCreation(petId, additionalMetadata, _file);
     }
 
-    public class UploadFileWithRequiredFileRequest {
+    public static class UploadFileWithRequiredFileRequest {
         private final Long petId;
         private final File requiredFile;
         private final String additionalMetadata;

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

@@ -415,7 +415,7 @@ public ResponseSpec getUserByNameWithResponseSpec(String username) throws WebCli
         return getUserByNameRequestCreation(username);
     }
 
-    public class LoginUserRequest {
+    public static class LoginUserRequest {
         private final String username;
         private final String password;
 
@@ -620,7 +620,7 @@ public ResponseSpec logoutUserWithResponseSpec() throws WebClientResponseExcepti
         return logoutUserRequestCreation();
     }
 
-    public class UpdateUserRequest {
+    public static class UpdateUserRequest {
         private final String username;
         private final User user;