第十週 產生3*3亂數不重複按鈕

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.Random;
public class Calculator extends JFrame implements ActionListener{
public static void main(String[]args){
new Calculator();

}
public Calculator()
{
String s;
Random ran = new Random();
int myran=ran.nextInt(9);

int temp;
 int[] a1 = { 1, 2, 3, 4, 5, 6, 7, 8, 9};
 int[] re;
for (int i = 0; i < 9; i++)
{
temp=a1[i];
a1[i]=a1[myran];
a1[myran]=temp;
}
JFrame window=new JFrame("Calculator");
window.setDefaultLookAndFeelDecorated(true);
window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
window.setLayout(new GridLayout(3,3));
JPanel jplPanel = new JPanel();
jplPanel.setLayout(new GridLayout(3,3));
JButton button[]=new JButton[10];
s=String.valueOf(1);

for (int i = 0; i < 9; i++)
{
button[i] = new JButton();
button[i].setSize(50,50);

button[i].setText(Integer.toString(a1[i]));

//button[i].setActionCommand("此按鈕為:"+i);
button[i].addActionListener(this);
jplPanel.add(button[i]);
}
window.getContentPane().add(jplPanel, BorderLayout.CENTER);
window.setSize(500,500);
window.setVisible(true);
}
 public void actionPerformed(ActionEvent e ) {
        //String cmd = e.getActionCommand();
//System.out.println(cmd);
}
}