class C { static int f; static void m() {} static { f = 2; } static class D { // members } } This example introduces top-level class C with static field f, static method m(), a static initializer ...

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).

Extension methods are useful when you can't (or don't want to) add methods to a class or subclass, or you are working with an interface. Commonly, such methods are called "utility methods", but in ...

System.out.println ("Area of circle using static method is : "+obj.area (6, 3.14)); System.out.println ("Circumference of circle using static method is : "+obj.circumference (6, 3.14)); } } /* Output ...