My windows won't close

Question

Hi. I registered a listener with my window, but when I press the X button, there is no response. What did I do wrong?
import java.awt.*;
import java.awt.event.*;
public class App0000
     public static void main(String args[])
          Frame frm = new AppWindow();
          frm.setVisible(true);
class AppWindow extends Frame
     public AppWindow()
          this.setSize(600, 400);
          this.addWindowListener(new WindowTerminator(this));
class WindowTerminator extends WindowAdapter
     private Frame theFrame;
     public WindowTerminator(Frame f)
          this.theFrame = f;
     public void WindowClosing(WindowEvent e)
          this.theFrame.dispose();
          System.exit(0);
}

Answer 1

You created a class that extends WindowAdapter. If you look at the API docs for WindowAdapter, you will see that there is no existing method named WindowClosing. There is a method named windowClosing, however. Since Java sees these as 2 different methods, you have added a method to WindowAdapter instead of overriding a method. So when a WindowEvent occurs, the WindowAdapter method named windowClosing is called, which does nothing.