JSliderDemo.java

package trash;

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

public class JSliderDemo {
    private JFrame frame = new JFrame("Slider");
    private JSlider slider = new JSlider(1, 50, 1);

    public JSliderDemo() {
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(new Dimension(100, 100));
        frame.add(slider);
    }

    public static void main(String[] args) {
        JSliderDemo sliderDemo = new JSliderDemo();
        sliderDemo.start();
    }

    private void start() {
        SwingUtilities.invokeLater(() -> frame.setVisible(true));
    }
}