推盤製作
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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 };

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 <= 9; i++)

{      

          if(e.getSource() == button[i]){

          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());

          }

}

}

}

}