Java How to Program, Early Objects, 11th Edition

... MouseTrackerFrame() 20      {
21         super("Demonstrating Mouse Events");
22
23         mousePanel = new JPanel();
24         mousePanel.setBackground(Color.WHITE);
25         add(mousePanel, BorderLayout.CENTER); // add panel to JFrame
26
27         statusBar = new JLabel("Mouse outside JPanel");
28         add(statusBar, BorderLayout.SOUTH); // add label to JFrame
29
30         // create and register listener for mouse and mouse motion events
31         MouseHandler handler = new MouseHandler();
32         mousePanel.addMouseListener(handler);
33         mousePanel.addMouseMotionListener(handler);
34      }
35
36      private class MouseHandler implements MouseListener,
37         MouseMotionListener
38      {
39         // MouseListener event handlers
40         // handle event when mouse released immediately after press
41         @Override
42         public void mouseClicked(MouseEvent ...