Contoh Program Event Handling di Java

 berikut ini Contoh program yang menggunakan tombol dan tombol  Exit dengan tampilan sebagai Berikut :

Berikut Codingnya :

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class ClickMe2 extends JFrame {
   private JButton tombol, btnExit;

    public ClickMe2() {

        super ("Event Handling");

        Container container = getContentPane();

        container.setLayout(new FlowLayout());

        ClickListener cl = new ClickListener ();

        tombol = new JButton ("Click Me!");

        tombol.addActionListener(cl);

        container.add(tombol);

        btnExit = new JButton ("Exit");

        btnExit.addActionListener(cl);

        container.add(btnExit);

        setSize (200,100);

        setVisible (true);

    }

    public static void main (String arg[]) {

        ClickMe2 test = new ClickMe2();

        test.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    }

    //inner class

    private class ClickListener implements ActionListener {

        public void actionPerformed (ActionEvent e) {

            if (e.getSource() == tombol) {

                JOptionPane.showMessageDialog(null, "You click me again, guys !!!");

            } else if (e.getSource() == btnExit){

                JOptionPane.showMessageDialog(null, "See you, guys !");

                System.exit(0);

            }

        }

    }

}