To assign a keyboard shortcut for accessing JTabbedPane‘s tab you can use the setMnemonicAt(int tabIndex, int mnemonic) method of the JTabbedPane class. The tabIndex parameter is a zero-based value parameter which means that the first tab is at index number 0. For the mnenomic parameter you can use constants value defined in the java.awt.event.KeyEvent class.

Here is an example in action on how to assign keyboard shortcut to JTabbedPane‘s tabs. To access the tabs you can use the ALT + A, ALT + B, ALT + C and ALT + D keyboard combination.

package org.kodejava.swing;

import javax.swing.*;
import java.awt.*;
import java.awt.event.KeyEvent;

public class TabbedPaneKeyboardShortcut extends JPanel {
    public TabbedPaneKeyboardShortcut() {
        initializeUI();
    }

    public static void showFrame() {
        JPanel panel = new TabbedPaneKeyboardShortcut();
        panel.setOpaque(true);

        JFrame frame = new JFrame("JTabbedPane Demo");
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        frame.setContentPane(panel);
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(TabbedPaneKeyboardShortcut::showFrame);
    }

    private void initializeUI() {
        this.setLayout(new BorderLayout());
        this.setPreferredSize(new Dimension(500, 200));

        JTabbedPane pane = new JTabbedPane();
        pane.addTab("A Tab", new JPanel());
        pane.addTab("B Tab", new JPanel());
        pane.addTab("C Tab", new JPanel());
        pane.addTab("D Tab", new JPanel());

        pane.setMnemonicAt(0, KeyEvent.VK_A);
        pane.setMnemonicAt(1, KeyEvent.VK_B);
        pane.setMnemonicAt(2, KeyEvent.VK_C);
        pane.setMnemonicAt(3, KeyEvent.VK_D);

        this.add(pane, BorderLayout.CENTER);
    }
}

The output of the code snippet above is:

JTabbedPane Tabs with Keyboard Shortcut

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Wayan

Founder at Kode Java Org

A programmer, runner, recreational diver, live in the island of Bali, Indonesia. Programming in Java, Spring, Hibernate / JPA. You can support me working on this project, buy me a cup of coffee ☕, every little bit helps, thank you 🙏

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