5/22 按0可對調

import java.awt.*;
import java.awt.event.*;
import java.util.Random;
import javax.swing.*;
public class Calculator extends JFrame implements
ActionListener{
int space;
JButton button[]=new JButton[10];

public static void main(String[]args){

new Calculator();
}


public Calculator()
{
String s;
int myrand;
int[] a = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
int[] aresult;
int temp;
Random ran = new Random();
/*
for (int i = 0; i < 9; i++)
{
 System.out.println(a[i]);
}
*/

for (int i = 0; i < 9; i++)
{
 myrand=ran.nextInt(9-i);
temp=a[8-i];
a[8-i]=a[myrand];
a[myrand]=temp;
}

for (int i = 0; i < 9; i++)
{
 System.out.println(a[i]);
}

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));


//s=Integer.toString(1);
s=String.valueOf(1);
//System.out.println(s);
//s="1";

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


button[i].setActionCommand(s);
button[i].addActionListener(this);
button[i].setSize(50,50);
button[i].setText(Integer.toString(a[i]));

jplPanel.add(button[i]);
if ( Integer.valueOf(button[i].getText())== 0)  
  {
                space=i;
                System.out.println(i)     ;
  }

}
window.getContentPane().add(jplPanel, BorderLayout.CENTER);
window.setSize(500,500);
window.setVisible(true);


}




public void actionPerformed(ActionEvent e) {
 for(int i=0; i <=8; i++)
{

if(e.getSource() == button[i]){
 //if( Integer.valueOf(button[i].getText())== 0)
String tempsting;
if (i==space-1)
{
tempsting=button[i].getText();
button[i].setText(button[i+1].getText());
button[i+1].setText(tempsting);
System.out.println(i+button[i].getText());
}
}


}

}

}