An example Inner class to implement an interface - Java Object Oriented Design

Java examples for Object Oriented Design:interface

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Description

An example Inner class to implement an interface

Demo Code

import java.awt.event.*;
import javax.swing.*;

public class TickTockInner
{
  private static String tickMessage = "Tick...";
  private static String tockMessage = "Tock...";

  public static void main(String[] args)
  {//w w  w . j av  a  2 s  .c  o  m
    TickTockInner t = new TickTockInner();
    t.go();
  }

  private void go()
  {
    Timer t = new Timer(1000, new Ticker());
    t.start();

    JOptionPane.showMessageDialog(null,
      "Click OK to exit program");
    System.exit(0);
  }

  static class Ticker implements ActionListener
  {
    private boolean tick = true;

    public void actionPerformed(ActionEvent event)
    {
      if (tick)
      {
        System.out.println(tickMessage);
      }
      else
      {
        System.out.println(tockMessage);
      }
      tick = !tick;
    }
  }
}

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