Java WindowAdapter .windowLostFocus (WindowEvent e)
Syntax
WindowAdapter.windowLostFocus(WindowEvent e) has the following syntax.
public void windowLostFocus(WindowEvent e)
Example
In the following code shows how to use WindowAdapter.windowLostFocus(WindowEvent e) method.
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;
public class Main {
JFrame window = new JFrame("Main");
public Main() {
window.setBounds(30, 30, 300, 300);//from ww w . j av a 2s.c om
window.addWindowListener(new WindowHandler());
window.setVisible(true);
}
class WindowHandler extends WindowAdapter {
public void windowLostFocus(WindowEvent e) {
System.out.println("windowLostFocus");
window.dispose(); // Release the window resources
System.exit(0); // End the application
}
}
public static void main(String[] args) {
new Main();
}
}
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