refactored to create separate serviceinterface, implementation and corresponding factory. JaxRs class uses the factory to find the implementation. Also fixed possibility for a code generator to control which API files that should be overwritten

modules/swagger-codegen/src/main/resources/JavaJaxRS/apiServiceImpl.mustache

@@ -0,0 +1,31 @@
+package {{package}}.impl;
+
+import {{package}}.*;
+import {{modelPackage}}.*;
+
+import com.sun.jersey.multipart.FormDataParam;
+
+{{#imports}}import {{import}};
+{{/imports}}
+
+import java.util.List;
+import {{package}}.NotFoundException;
+
+import java.io.InputStream;
+
+import com.sun.jersey.core.header.FormDataContentDisposition;
+import com.sun.jersey.multipart.FormDataParam;
+
+import javax.ws.rs.core.Response;
+
+{{#operations}}
+public class {{classname}}ServiceImpl implements {{classname}}Service {
+  {{#operation}}
+      public Response {{nickname}}({{#allParams}}{{>serviceQueryParams}}{{>servicePathParams}}{{>serviceHeaderParams}}{{>serviceBodyParams}}{{>serviceFormParams}}{{#hasMore}},{{/hasMore}}{{/allParams}})
+      throws NotFoundException {
+      // do some magic!
+      return Response.ok().entity(new ApiResponseMessage(ApiResponseMessage.OK, "magic!")).build();
+  }
+  {{/operation}}
+}
+{{/operations}}