The Anonymous program

import java.awt.*;
import java.awt.event.*;

class Anonymous extends Frame {

  public static void main(String[] args) {
    new Anonymous();
  }

  Anonymous() {
    setLayout(null);
    final Button button = new Button("Click me!");
    button.setBounds(100,100,100,100);
    button.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        if (button.getLocation().x == 100)
          button.setBounds(200,200,100,100);
        else
          button.setBounds(100,100,100,100);
      }
    });
    add(button);
    addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
      }   
    });
    setSize(400,400);
    show();
  }

}


	Inner classes: anonymous classes The Anonymous program The `Anonymous` program illustrates the use of anonymous inner classes. It creates a window program with a moving button. The `Anonymous()` constructor uses an anonymous inner class to create an object that implements the `ActionListener` interface to handle the clicking of the button. This object provides an implementation of the `actionPerformed()` method. Note that the `button` variable is declared as `final`. The `Anonymous()` constructor also uses an anonymous inner class that extends the `WindowAdapter` class to handle the closing of the application window.
	The Anonymous program import java.awt.; import java.awt.event.; class Anonymous extends Frame { public static void main(String[] args) { new Anonymous(); } Anonymous() { setLayout(null); final Button button = new Button("Click me!"); button.setBounds(100,100,100,100); button.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { if (button.getLocation().x == 100) button.setBounds(200,200,100,100); else button.setBounds(100,100,100,100); } }); add(button); addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0); } }); setSize(400,400); show(); } }