diff --git a/modules/swagger-codegen/src/main/resources/JavaJaxRS/apiService.mustache b/modules/swagger-codegen/src/main/resources/JavaJaxRS/apiService.mustache
index 53f420d620a4..43e7cd8685ce 100644
--- a/modules/swagger-codegen/src/main/resources/JavaJaxRS/apiService.mustache
+++ b/modules/swagger-codegen/src/main/resources/JavaJaxRS/apiService.mustache
@@ -19,9 +19,9 @@ import com.sun.jersey.multipart.FormDataParam;
 import javax.ws.rs.core.Response;
 
 {{#operations}}
-public interface {{classname}}Service {
+public abstract class {{classname}}Service {
   {{#operation}}
-      public Response {{nickname}}({{#allParams}}{{>serviceQueryParams}}{{>servicePathParams}}{{>serviceHeaderParams}}{{>serviceBodyParams}}{{>serviceFormParams}}{{#hasMore}},{{/hasMore}}{{/allParams}})
+      public abstract Response {{nickname}}({{#allParams}}{{>serviceQueryParams}}{{>servicePathParams}}{{>serviceHeaderParams}}{{>serviceBodyParams}}{{>serviceFormParams}}{{#hasMore}},{{/hasMore}}{{/allParams}})
       throws NotFoundException;
   {{/operation}}
 }
diff --git a/modules/swagger-codegen/src/main/resources/JavaJaxRS/apiServiceImpl.mustache b/modules/swagger-codegen/src/main/resources/JavaJaxRS/apiServiceImpl.mustache
index 185de10e439e..d49fa4952a2c 100644
--- a/modules/swagger-codegen/src/main/resources/JavaJaxRS/apiServiceImpl.mustache
+++ b/modules/swagger-codegen/src/main/resources/JavaJaxRS/apiServiceImpl.mustache
@@ -19,8 +19,9 @@ import com.sun.jersey.multipart.FormDataParam;
 import javax.ws.rs.core.Response;
 
 {{#operations}}
-public class {{classname}}ServiceImpl implements {{classname}}Service {
+public class {{classname}}ServiceImpl extends {{classname}}Service {
   {{#operation}}
+      @Override
       public Response {{nickname}}({{#allParams}}{{>serviceQueryParams}}{{>servicePathParams}}{{>serviceHeaderParams}}{{>serviceBodyParams}}{{>serviceFormParams}}{{#hasMore}},{{/hasMore}}{{/allParams}})
       throws NotFoundException {
       // do some magic!