The former method is executed by default methods a() and b(), and the latter method is executed by static method d(). Compile Listing 21 (javac PMDemo.java) and run the application (java PMDemo).

See the Java 101 Java interfaces tutorial for a more in-depth introduction to using interfaces in your Java programs, including where and where not to use default, static, and private methods.

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 ...

Here is a quote from Absolute Java, 1st Ed, by Walter Savitch:"Note that with a static method, the class name serves the same purpose as a calling object. (It would be legal to create an object of ...