You should see the contents of HelloWorld.java in the main window. If not, use the Projects window on the left and locate HelloWorld.java (under Source Packages).

Next, open com.javaworld.sample.helloworld.Activator.java in the Eclipse Java editor. You will notice that you are now able to access the HelloService interface but not the HelloServiceImpl class.

Developers who create a runnable Java class, be it for a ‘Hello World’ demonstration or to kick off a fully featured enterprise application, will enjoy the following technical benefits when using ...