Create an anonymous class within a method - Java Object Oriented Design

Java examples for Object Oriented Design:Anonymous Class

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Description

Create an anonymous class within a method

Demo Code

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JOptionPane;
import javax.swing.Timer;

public class Main {

  public static void main(String[] args) {
    String tickMessage = "Tick...";
    String tockMessage = "Tock...";
    Timer t = new Timer(1000, new ActionListener() {
      private boolean tick = true;

      public void actionPerformed(ActionEvent event) {
        if (tick) {
          System.out.println(tickMessage);
        } else {//  w  w  w .  j a v  a  2s  . c o m
          System.out.println(tockMessage);
        }
        tick = !tick;
      }
    });

    t.start();

    // display a message box to prevent the program
    // from ending immediately
    JOptionPane.showMessageDialog(null, "Click OK to exit program");
    System.exit(0);
  }
}

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