Create ActionListener for AWT Button


The following code illustrates using Action Listener with AWT Button.

import java.awt.*;
import java.awt.event.*;
class ButtonAction extends Frame
{
Button b1,b2,b3;
Frame thisFrame;
public ButtonAction()
{
// Set the frame properties
setTitle("Button with ActionListener Demo");
setSize(400,400);
setLayout(new FlowLayout());
setLocationRelativeTo(null);
setVisible(true);
// Assign current object
thisFrame=this;
// Create buttons
b1=new Button("Minimize");
b2=new Button("Maximize/Restore");
b3=new Button("Exit");
// Add buttons
add(b1);
add(b2);
add(b3);
// Add action listeners to buttons
b1.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae)
{
setState(Frame.ICONIFIED);
}
});
b2.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae)
{
if(thisFrame.getExtendedState()==Frame.NORMAL)
setExtendedState(Frame.MAXIMIZED_BOTH);
else if(thisFrame.getExtendedState()==Frame.MAXIMIZED_BOTH)
setExtendedState(Frame.NORMAL);
}
});
b3.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae)
{
System.exit(0);
}
});
}
public static void main(String args[])
{
new ButtonAction();
}
}


ButtonAction() : Code for creation of Button and adding ActionListener is written here
new ButtonAction() : Create the object for the class ButtonAction




Posted by at on

Tags: AWT Event Handling,