How to define JRadioButton label position?

In this code snippet you’ll see how to define JRadioButton label position.┬áBy default the label will be displayed on the right side of the button. In the code below you will see some examples for placing the label on the left side, at the top and the bottom of the JRadioButton.

To define the label position we use the combination of the setHorizontalTextPosition() and setVerticalTextPosition() method and specified the position using one of the available constant in SwingConstants interface.

package org.kodejava.example.swing;

import javax.swing.*;

public class RadioButtonLabelPosition {
    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

        JPanel panel = new JPanel();

        // Create JRadioButton with label on the right
        JRadioButton button1 = new JRadioButton("Button One");
        button1.setHorizontalTextPosition(SwingConstants.RIGHT);

        // Create JRadioButton with label on the left
        JRadioButton button2 = new JRadioButton("Button Two");
        button2.setHorizontalTextPosition(SwingConstants.LEFT);

        // Create JRadioButton with label at the bottom centered.
        JRadioButton button3 = new JRadioButton("Button Three");
        button3.setVerticalTextPosition(SwingConstants.BOTTOM);
        button3.setHorizontalTextPosition(SwingConstants.CENTER);

        // Create JRadioButton with label at the top centered.
        JRadioButton button4 = new JRadioButton("Button Four");
        button4.setVerticalTextPosition(SwingConstants.TOP);
        button4.setHorizontalTextPosition(SwingConstants.CENTER);

        panel.add(button1);
        panel.add(button2);
        panel.add(button3);
        panel.add(button4);

        frame.add(panel);
        frame.setSize(300, 300);
        frame.setVisible(true);
    }
}

Here is a screen capture result of the code snippet above:

JRadioButton Label Position

How do I create a JSlider with custom labels?

The JSlider‘s setLabelTable() method allows you to define a custom labels for the JSlider. The label table is a Hashtable that contains an Integer number as the keys and a JLabel component as their values. The integer keys correspond to the JSlider tick where the labels will be customized.

package org.kodejava.example.swing;

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

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

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

        JSlider slider = new JSlider(JSlider.VERTICAL, 0, 40, 0);
        slider.setMinorTickSpacing(1);
        slider.setMajorTickSpacing(5);
        slider.setPaintTicks(true);

        Hashtable<Integer, JLabel> labels = new Hashtable<>();
        labels.put(0, new JLabel("Freezing"));
        labels.put(15, new JLabel("Cold"));
        labels.put(25, new JLabel("Warm"));
        labels.put(35, new JLabel("Hot"));
        slider.setLabelTable(labels);

        slider.setPaintLabels(true);

        add(slider, BorderLayout.CENTER);
    }

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

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

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

The screen capture of the example above is:

JSlider with Custom Labels Demo