How do I reverse JSlider’s value-range?

On a normal JSlider the value range displayed left-to-right on a horizontal JSlider and bottom-to-top on vertical JSlider. To reverse the slider values from their normal order you can use the setInverted() method of the JSlider instance. Passing a true boolean value into this method call reverse the values order.

package org.kodejava.example.swing;

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

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

    private void initializeUI() {
        setLayout(new BorderLayout());
        setPreferredSize(new Dimension(200, 100));

        JSlider slider = new JSlider(JSlider.HORIZONTAL, 0, 20, 10);
        slider.setMinorTickSpacing(1);
        slider.setMajorTickSpacing(5);
        slider.setPaintLabels(true);
        slider.setPaintTicks(true);

        //
        // Reverse the value-range of a JSlider. On a normal
        // horizontal JSlider the maximum value is on the right
        // side. Specifying inverted to true makes the maximum
        // value placed on the left side.
        //
        slider.setInverted(true);

        add(slider, BorderLayout.CENTER);
    }

    public static void showFrame() {
        JPanel panel = new InvertedJSlider();

        JFrame frame = new JFrame("Inverted JSlider");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setContentPane(panel);
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                InvertedJSlider.showFrame();
            }
        });
    }
}
Wayan Saryada

Wayan Saryada

A programmer, runner, recreational diver, currently living in the island of Bali, Indonesia. Mostly programming in Java, creating web based application with Spring Framework, JPA, etc. If you need help on Java programming you can hire me on Fiverr.
Wayan Saryada

Leave a Reply