應用數學系 江穎 程式設計的部落格

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

public class Test 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));
}
}
}
}
);
jplPanel.add(button[i]);
}

window.getContentPane().add(jplPanel, BorderLayout.CENTER);
window.setSize(400,400);
window.setVisible(true);
}

}