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| Listeners |
Expert:tarun1
can u get me the code for Window listener and Text Listener and Component Listener? |
| Answers |
Hi friend,
Code for Window listener :
import java.awt.event.WindowListener;
import java.awt.event.*;
import javax.swing.JFrame;
public class WindowListenerExample {
public static void main(String args[]) {
JFrame jf = new JFrame("Window Listener");
WindowListener wl = new WindowAdapter() {
public void windowClosing(WindowEvent w) {
System.exit(0);
}
};
jf.addWindowListener(wl);
jf.setSize(300, 300);
jf.show();
}
}
Code for Component Listener :
import java.awt.*;
import java.awt.event.ComponentListener;
import java.awt.event.*;
import javax.swing.*;
public class ComponentListenerExample {
public static void main(String args[]) {
JFrame jf = new JFrame();
Container container = jf.getContentPane();
ComponentListener cl = new ComponentListener() {
public void clonentHidden(ComponentEvent e) {
dump("Hidden", e);
}
public void clonentMoved(ComponentEvent e) {
dump("Moved", e);
}
public void clonentResized(ComponentEvent e) {
dump("Resized", e);
}
public void clonentShown(ComponentEvent e) {
dump("Shown", e);
}
private void dump(String type, ComponentEvent e) {
System.out.println(e.getComponent().getName() + " : " + type);
}
};
JButton jbl = new JButton("Left");
jbl.setName("Left");
jbl.addComponentListener(cl);
final JButton jbr = new JButton("Right");
jbr.setName("Right");
jbr.addComponentListener(cl);
ActionListener al = new ActionListener() {
public void alPerformed(ActionEvent e) {
jbr.setVisible(!jbr.isVisible());
}
};
jbl.addActionListener(al);
JSplitPane jsp = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, true,
jbl, jbr);
container.add(jsp, BorderLayout.CENTER);
jf.setSize(300, 200);
jf.show();
}
}
For more information on Listener visit to :
http://www.roseindia.net/java/example/java/swing/
Thanks
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