YU CHI BLOG

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

public class myButton extends JFrame{

public static void main(String[]args){

JFrame window=new JFrame("myButton");
window.setSize(450, 150);
JButton button[]=new JButton[16];
JPanel jplPanel = new JPanel();
jplPanel.setLayout(new GridLayout(4,4,8,8));

for (int i = 0; i < 16; i++){
button[i] = new JButton();
button[i].setSize(40,40);
button[i].setText(Integer.toString(i+1));

button[i].addActionListener(

new ActionListener() {

public void actionPerformed(ActionEvent e) {

for (int j = 0; j < 16; j++) {
if (e.getSource() == button[j]) {
JOptionPane.showMessageDialog(null, (j+1));
System.out.print(j+1+" ");
}
}
}
}
);

jplPanel.add(button[i]);

}

window.getContentPane().add(jplPanel, BorderLayout.CENTER);

window.setSize(400,400);
window.setVisible(true);

}

}