2015/05/08

  

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(){

JFrame window=new JFrame("Calculator");
window.setDefaultLookAndFeelDecorated(true);
window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
window.setLayout(new GridLayout(3,3));

int myrand;

JPanel jplPanel = new JPanel();
jplPanel.setLayout(new GridLayout(3,3));

JButton button[]=new JButton[10];
for (int i = 1; i <=9 ; i++)
{
Random ran = new Random();
myrand=ran.nextInt((9)+1);

button[i] = new JButton();
button[i].setSize(50,50);
button[i].setActionCommand(""+i);
button[i].addActionListener(this);
jplPanel.add(button[i]);
button[i].setText(Integer.toString(myrand));
}
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);
}
}