Gibt es Gradient-Button unter Swing?

 package de.tutorials;
 
 import java.awt.Color;
 import java.awt.GradientPaint;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 
 import javax.swing.JButton;
 import javax.swing.JFrame;
 
 public class GradientButtonExample extends JFrame {
 
 	public GradientButtonExample() {
 		super("GradientButtonExample");
 		setDefaultCloseOperation(EXIT_ON_CLOSE);
 
 		JButton btn = new JButton("Push me") {
 			protected void paintComponent(Graphics gra) {
 				Graphics2D g = (Graphics2D) gra;
 				super.paintComponent(g);
 				int w = this.getWidth();
 				int h = this.getHeight();
 
 		    	GradientPaint gradientPaint = new GradientPaint(0.F, 0.F,
 		    			Color.YELLOW, w, h, Color.RED);
 				g.setPaint(gradientPaint);
 				g.fillRect(0, 0, w, h);
 
 				getUI().paint(g, this);
 			}
 		};
 		btn.setBackground(new Color(255, 255, 255, 255));
 
 		add(btn);
 
 		pack();
 		setVisible(true);
 	}
 
 	/**
 	 * @param args
 	 */
 	public static void main(String[] args) {
 		new GradientButtonExample();
 	}
 
 }

private JPanel getJContentPane() 
	{
		if (jContentPane == null)
		{
		
		jContentPane = new JPanel();
		jLabel12 = new JLabel();
		jLabel12.setBounds(new java.awt.Rectangle(808, 626, 50, 25));
		jLabel12.setText("Zeit:");
                                jContentPane.add(jLabel, null);
                                GradientButton jBGE = new GradientButton();
                                }
		return jContentPane;
	}

import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
 
import javax.swing.JButton;
import javax.swing.JFrame;
 
public class GradientButton extends ZeiterfassungGlasdeckel{
	
	public static void main(String[]args)
	{
		new GradientButtonExample();
	}
	
	public GradientButtonExamle()
	{
	
	          JButton jbtn = new JButton(){
	        	  protected void paintComponent(Graphics ga)
	        	  {
	        	  Graphics2D g = (Graphics2D)gra;
	        	  super.paintComponent(g);
GradientPaint gradient = new GradientPaint (675,557,Color.GREEN,126,92,Color.GREEN);
                                                  g.setPaint(gradient);
	        		  g.fillRect(675,557,126,92);
	        		  getUI().paint(g,this);
	        	  }
	          };
	          super.add(jbtn);
	
	}
}

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

public class GradientButton extends JButton {
    public GradientButton(String name) {
        this.setText(name);
    }

    @Override
    protected void paintComponent(Graphics g) {
        Graphics2D g2d = (Graphics2D) g;

        g2d.setFont(new Font("Arial", Font.BOLD, 14));
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g2d.setPaint(new LinearGradientPaint(0.0f, 0.0f, 0.0f, (float) getHeight(), new float[]{0.0f, 0.30f, 0.60f,
                0.9f}, new Color[]{new Color(0x63a5f7), new Color(0x3799f4), new Color(0x2d7eeb),
                new Color(0x30a5f9)}));
        g2d.fillRect(0, 0, getWidth(), getHeight());

        int width = getFontMetrics(getFont()).stringWidth(getText());
        int height = getFont().getSize();

        g2d.setColor(Color.YELLOW);
        g2d.drawString(getText(), (getWidth() / 2 - width / 2), (getHeight() / 2 + height / 2));
    }
}