Thanks @EstebanBustamante  That works as well. Seems it depends on the usecase and need. Both solutions with BundleContext and SlingBindings would work.

It complains Compilation errors in /apps/acs-tools/components/aemfiddle/fiddle/fiddle.java: Line 15, column 396 : Only a type can be imported. org.osgi.service.component.annotations.Reference resolves to a package Found out one solution and gets the work done:getService(MyService.class);  static <T>...