第十週 - 作業

鏈接：程式設計工藝大師
button上顯示的數字為亂數
程式代碼：
import java.awt.*;
import java.awt.event.*;
import java.util.Random;
import javax.swing.*;
public class Calculator extends JFrame implements
ActionListener{

JButton button[]=new JButton[10];

public static void main(String[]args){

new Calculator();
}


public Calculator()
{
String s;
int c;
int myrand;
int[] a = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
int[] b;
Random ran = new Random();
for (int i = 0; i < 9; i++)
{
myrand=ran.nextInt(9-i);
c = a[8-i];
a[8-i] = a[myrand];
a[myrand] = c;
}


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


}




public void actionPerformed(ActionEvent e) {
    

for(int i=1; i <= 9; i++)
{
          if(e.getSource() == button[i]){
              System.out.println(i);
          }
    }

}


}