//PROGRAM 13-1
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

class MySwingApplication extends JFrame 
  implements ActionListener {
	
  public JLabel label;
  public JButton button;
	
  private int numClicks = 0;	
	
  public MySwingApplication(String title) {
    super(title);
    setBounds(0, 0, 300, 170);
    getContentPane().setLayout(null);
    setResizable(false);
    setDefaultCloseOperation(EXIT_ON_CLOSE);
						
    label = new JLabel("Jumlah klik yang dilakukan: 0");
    label.setLocation(60, 40);
    label.setSize(label.getPreferredSize());	
				
    button = new JButton("Klik aku!!");
    button.setLocation(60, 80);
    button.setSize(label.getPreferredSize());
    button.addActionListener(this);
		
    getContentPane().add(label);
    getContentPane().add(button);
		
    setVisible(true);		
  }	
	
  public void actionPerformed(ActionEvent event) {
    if (event.getSource() == button) {			
      label.setText("Jumlah klik yang dilakukan: " + 
        (++numClicks));
    }		
  }
	
  public static void main(String[] args) {
    MySwingApplication app = 
         new MySwingApplication("Contoh Event-Handling");
  }	
}