TagDemo.java

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.JTextField;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

public class TagDemo extends JFrame {
    /**
     * Thieu Mao - KSEC
     */
    private static final long serialVersionUID = 1L;
    JTabbedPane tabs = new JTabbedPane();

    public static void main(String[] args) {
        TagDemo fr = new TagDemo("Thieu Mao - KSEC");
        fr.setVisible(true);
        fr.setSize(300,200);
    }

    public TagDemo(String title) {
        super(title);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JPanel p = new JPanel();
        p.add(new JButton("Button on Tab 0"));
        tabs.addTab("Tab 0", p);

        p = new JPanel();
        p.add(new JTextField("Text on Tab 1"));
        tabs.addTab("Tab 1", p);

        p = new JPanel();
        p.add(new JButton("Button on Tab 2"));
        tabs.addTab("Tab 2", p);

        p = new JPanel();
        p.add(new JTextField("Text on Tab 3"));
        tabs.addTab("Tab 3", p);

        // Bat su kien khi click vao Tab
        tabs.addChangeListener(new ChangeListener() {
            public void stateChanged(ChangeEvent e) {
                System.out.println("Tab=" + tabs.getSelectedIndex());
            }
        });

        getContentPane().add(tabs, "Center");
    }
}