get current tab index java swing code example

Example: get current tab index java swing

public static void main(String[] args) {
  JFrame frame = new JFrame();
  frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
  frame.setBounds(0, 0, 300, 400);
  frame.setLayout(null);
  final JTabbedPane tabbedPane = new JTabbedPane();
  tabbedPane.addTab("One", new JPanel());
  tabbedPane.addTab("Two", new JPanel());
  tabbedPane.addTab("Three", new JPanel());
  tabbedPane.addChangeListener(new ChangeListener() {
    public void stateChanged(ChangeEvent e) {
      System.out.println("Tab: " + tabbedPane.getSelectedIndex());
    }
  });
  tabbedPane.setBounds(0, 0, 300, 400);
  frame.add(tabbedPane);
  frame.setVisible(true);
}