diff -ruN original/DrawTest.java modified/DrawTest.java
--- original/DrawTest.java	2008-11-10 23:31:58.000000000 +0400
+++ modified/DrawTest.java	2009-07-09 17:29:42.000000000 +0400
@@ -62,6 +62,11 @@
 
     public static void main(String args[]) {
 	Frame f = new Frame("DrawTest");
+
+        f.addWindowListener(new WindowAdapter() {
+                public void windowClosing(WindowEvent e) { System.exit(0); }
+        });
+
 	DrawTest drawTest = new DrawTest();
 	drawTest.init();
 	drawTest.start();
@@ -194,6 +199,12 @@
     DrawPanel target;
 
     public DrawControls(DrawPanel target) {
+        Button button = new Button("Quit");
+        button.addActionListener(new ActionListener() {
+            public void actionPerformed(ActionEvent e) { System.exit(0); }
+        });
+        add(button);
+
 	this.target = target;
 	setLayout(new FlowLayout());
 	setBackground(Color.lightGray);