Java How to Program, Early Objects, 11th Edition

... "panel two", SwingConstants.CENTER);
29          JPanel panel2 = new JPanel();
30          panel2.setBackground(Color.YELLOW);
31          panel2.add(label2);
32          tabbedPane.addTab("Tab Two", null, panel2, "Second Panel");
33
34          // set up panel3 and add it to JTabbedPane
35          JLabel label3 = new JLabel("panel three");
36          JPanel panel3 = new JPanel();
37          panel3.setLayout(new BorderLayout());
38          panel3.add(new JButton("North"), BorderLayout.NORTH);
39          panel3.add(new JButton("West"), BorderLayout.WEST);
40          panel3.add(new JButton("East"), BorderLayout.EAST);
41          panel3.add(new JButton("South"), BorderLayout.SOUTH);
42          panel3.add(label3, BorderLayout.CENTER);
43          tabbedPane.addTab("Tab Three", null, panel3, "Third Panel");
44
45         add(tabbedPane); // add JTabbedPane to frame
46      }
47 }  ...