Home Tutorialhelp Comment Changing the Label of a JButton Component in Java

 
 

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saurabh
Changing the Label of a JButton Component in Java,
May 28, 2009 at 8:02 PM

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
class ButtonOn extends JFrame implements ActionListener
{
JButton b1=new JButton("ON");
public ButtonOn()
{
super("sam Button");
//Container c=getContentPane();
JPanel c=new JPanel();
c.setLayout(new FlowLayout());
c.add(b1);
setSize(400,400);
setVisible(true);
add(c);
b1.addActionListener(this);
}
public void actionPerformed(ActionEvent ae)
{
String text = (String)ae.getActionCommand();
JOptionPane.showMessageDialog(null, text);
if (text.equals("ON"))
{
b1.setText("OFF");
}
else
{
b1.setText("ON");
}
}
}
class UseButtonOn
{
public static void main(String ar[])
{
ButtonOn s=new ButtonOn();
}
}
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