Demonstration of Anonymous Extension in Java

AnonymousExtend.java

public class AnonymousExtend {

  public static class Doer {
    public void doIt() {
      System.out.println("Hello, World!");
    }   
  }

  public static final Doer MY_DOER = new Doer() {
    @Override
    public void doIt() {
      System.out.println("OVERRIDE!");
    }   
  };  

  public static void main(String[] argv) {
    MY_DOER.doIt();
  }

}