TestStaticMethod.java

package test;

public class TestStaticMethod {

    static class A {
        static A getInstance() {
            return new A();
        }

        public void say() {
            System.out.println("I'm Class A");
        }
    }

    static class B extends A {
//      static A getInstance() {
//          return new B();
//      }
        public void say() {
            System.out.println("I'm Class B");
        }

    }


    /**
     * @param args
     */
    public static void main(String[] args) {
        A.getInstance().say();
        B.getInstance().say();
    }

}