2015/04/17

 

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class Test
{


public static void main(String[] args)
{
JFrame jtfMainFrame = new JFrame("Which Button Demo");
jtfMainFrame.setSize(450, 150);
JPanel jplPanel = new JPanel();
int i;
int j=1;
int num1 , num2;
JButton jbnButton[]  = new JButton[9];
JButton changeButton[] = new JButton[2];
jplPanel.setLayout (new GridLayout(3, 3));
for(i = 0;i<=8;i++){
 jbnButton[i]=new JButton("Button"+(i+1));
 jplPanel.add(jbnButton[i]);
 String s = Integer.toString(i+1);
 jbnButton[i].addActionListener(new ActionListener() {

   public void actionPerformed(ActionEvent e) {
/*if(j<2){
changeButton[j] = jbnButton[i];
num1 = i;
j++;
}
else if(j==2){
changeButton[j]=jbnButton[i];
jbnButton[num1] = changeButton[j];
jbnButton[i] = changeButton[j-1];
j=1;
}*/
//j++;
//JButton btn = (JButton[i])e.getSourec();
//lab.setText(btn.getLabel+".");
System.out.println("Button"+s);
   }
  });
}

jtfMainFrame.getContentPane().add(jplPanel, BorderLayout.CENTER);
jtfMainFrame.setVisible(true);
System.out.print("chih-yu hsu");
}
}

  

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Calculator extends JFrame{
public static void main(String[]args){
JFrame window=new JFrame("Calculator");
JPanel jplPanel = new JPanel();
JButton button[]=new JButton[10];

for (int i = 1; i <= 9; i++)
{
button[i] = new JButton();
button[i].setSize(50,50);
button[i].setText(Integer.toString(i));
jplPanel.add(button[i]);
}
window.getContentPane().add(jplPanel, BorderLayout.CENTER);
window.setSize(500,500);
window.setVisible(true);
}}

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
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));

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

JButton button[]=new JButton[10];
for (int i = 1; i <= 9; i++)
{
button[i] = new JButton();
button[i] .setActionCommand("d1");
button[i] .addActionListener(this);
button[i].setSize(50,50);
button[i].setText(Integer.toString(i));
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();
if (cmd == "d1") {
System.out.println("Yes....");
}
}
}