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    <p>Here is a full example of working UI that shown on 1st image:<br> (no magic - just a bit of work with graphics and basic UI knowledge)</p> <pre><code>import java.awt.BasicStroke; import java.awt.Color; import java.awt.Dimension; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.RenderingHints; import java.awt.Stroke; import java.awt.geom.GeneralPath; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JSlider; import javax.swing.SwingConstants; import javax.swing.plaf.basic.BasicSliderUI; /** * * @see http://stackoverflow.com/a/12297384/714968 */ public class CustomSliderUI extends BasicSliderUI { private BasicStroke stroke = new BasicStroke(1f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND, 0f, new float[]{1f, 2f}, 0f); public CustomSliderUI(JSlider b) { super(b); } @Override public void paint(Graphics g, JComponent c) { Graphics2D g2d = (Graphics2D) g; g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); super.paint(g, c); } @Override protected Dimension getThumbSize() { return new Dimension(12, 16); } @Override public void paintTrack(Graphics g) { Graphics2D g2d = (Graphics2D) g; Stroke old = g2d.getStroke(); g2d.setStroke(stroke); g2d.setPaint(Color.BLACK); if (slider.getOrientation() == SwingConstants.HORIZONTAL) { g2d.drawLine(trackRect.x, trackRect.y + trackRect.height / 2, trackRect.x + trackRect.width, trackRect.y + trackRect.height / 2); } else { g2d.drawLine(trackRect.x + trackRect.width / 2, trackRect.y, trackRect.x + trackRect.width / 2, trackRect.y + trackRect.height); } g2d.setStroke(old); } @Override public void paintThumb(Graphics g) { Graphics2D g2d = (Graphics2D) g; int x1 = thumbRect.x + 2; int x2 = thumbRect.x + thumbRect.width - 2; int width = thumbRect.width - 4; int topY = thumbRect.y + thumbRect.height / 2 - thumbRect.width / 3; GeneralPath shape = new GeneralPath(GeneralPath.WIND_EVEN_ODD); shape.moveTo(x1, topY); shape.lineTo(x2, topY); shape.lineTo((x1 + x2) / 2, topY + width); shape.closePath(); g2d.setPaint(new Color(81, 83, 186)); g2d.fill(shape); Stroke old = g2d.getStroke(); g2d.setStroke(new BasicStroke(2f)); g2d.setPaint(new Color(131, 127, 211)); g2d.draw(shape); g2d.setStroke(old); } public static void main(String[] args) { JFrame frame = new JFrame(); JSlider slider = new JSlider(0, 100); slider.setPaintTicks(true); slider.setPaintLabels(true); slider.setMinorTickSpacing(5); slider.setMajorTickSpacing(25); slider.setUI(new CustomSliderUI(slider)); frame.add(slider); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.pack(); frame.setVisible(true); } } </code></pre> <p>You can easily modify the thumb (gripper) size by changing the returned bounds. The thumb painting will adapt to any size. And you can also easily customize painting of any other slider part.</p> <p>Here is the final view by the way:</p> <p><img src="https://i.stack.imgur.com/FlFAN.png" alt="enter image description here"> </p> <p>P.S. I did not adapt UI for vertical sliders, but that shouldn't take too long.</p>
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