Exiting programs using the escape key

Question

My team and I are design games for autistic children. One of the problems we are having is that we do not know how to quit the application using the escape key. Our team would really appreciate it if you could tell us how this is done.

Answer 1

Quick example:
import java.awt.event.*;
import javax.swing.*;
public class ExitOnEscape extends JFrame
    public ExitOnEscape()
        setSize(300, 300);
        addKeyListener(new KeyAdapter()
            public void keyPressed(KeyEvent e)
                int key = e.getKeyCode();
                if(key == KeyEvent.VK_ESCAPE)
                    System.exit(0);
        setVisible(true);
    public static void main(String[] args)
        new ExitOnEscape();
}