Java Swing How to - Add Mnemonic key to JTabbedpane

Question

We would like to know how to add Mnemonic key to JTabbedpane.
Answer

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.KeyEvent;
/* w ww .  j a  va  2s.c om*/
import javax.swing.ImageIcon;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.UIManager;

public class Main extends JPanel {
  public Main() {
    super(new GridLayout(1, 1));

    JTabbedPane tabbedPane = new JTabbedPane();
    ImageIcon icon = createImageIcon("images/middle.gif");

    JComponent panel1 = makeTextPanel("Panel #1");
    tabbedPane.addTab("Tab 1", icon, panel1, "Does nothing");
    tabbedPane.setMnemonicAt(0, KeyEvent.VK_1);

    JComponent panel2 = makeTextPanel("Panel #2");
    tabbedPane.addTab("Tab 2", icon, panel2, "Does twice as much nothing");
    tabbedPane.setMnemonicAt(1, KeyEvent.VK_2);

    JComponent panel3 = makeTextPanel("Panel #3");
    tabbedPane.addTab("Tab 3", icon, panel3, "Still does nothing");
    tabbedPane.setMnemonicAt(2, KeyEvent.VK_3);

    JComponent panel4 = makeTextPanel("Panel #4 (has a preferred size of 410 x 50).");
    panel4.setPreferredSize(new Dimension(410, 50));
    tabbedPane.addTab("Tab 4", icon, panel4, "Does nothing at all");
    tabbedPane.setMnemonicAt(3, KeyEvent.VK_4);

    add(tabbedPane);

    tabbedPane.setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_LAYOUT);
  }

  protected JComponent makeTextPanel(String text) {
    JPanel panel = new JPanel(false);
    JLabel filler = new JLabel(text);
    filler.setHorizontalAlignment(JLabel.CENTER);
    panel.setLayout(new GridLayout(1, 1));
    panel.add(filler);
    return panel;
  }
  protected static ImageIcon createImageIcon(String path) {
    java.net.URL imgURL = Main.class.getResource(path);
    if (imgURL != null) {
      return new ImageIcon(imgURL);
    } else {
      System.err.println("Couldn't find file: " + path);
      return null;
    }
  }

  public static void main(String[] args) {
    UIManager.put("swing.boldMetal", Boolean.FALSE);
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.add(new Main(), BorderLayout.CENTER);
    frame.pack();
    frame.setVisible(true);
  }
}