[Java] [Swing] [Netbeans] [ Custom Palette ] jPanel Gradient Background

import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.event.MouseMotionListener;
import javax.swing.JCheckBox;
import javax.swing.JFormattedTextField;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JRadioButton;
import javax.swing.JTextField;
import javax.swing.JToolBar;
/**
 *
 * @author Andi.irah
 */

public class AeGradientPanel
  extends JPanel
{
  public Color AeStartColor = Color.MAGENTA;
  public Color AeEndColor = Color.BLUE;
  public boolean AeTranspControls = true;
  public int AeGradientFocus = 500;
  public int AeBorderRadius = 10;
  public boolean AeFillBackground = true;
  
  public boolean isAeFillBackground()
  {
    return this.AeFillBackground;
  }
  
  public void setAeFillBackground(boolean AeFillBackground)
  {
    this.AeFillBackground = AeFillBackground;
  }
  
  public int getAeBorderRadius()
  {
    return this.AeBorderRadius;
  }
  
  public void setAeBorderRadius(int AeBorderRadius)
  {
    this.AeBorderRadius = AeBorderRadius;
  }
  
  public Color getAeStartColor()
  {
    return this.AeStartColor;
  }
  
  public void setAeStartColor(Color AeStartColor)
  {
    this.AeStartColor = AeStartColor;
  }
  
  public Color getAeEndColor()
  {
    return this.AeEndColor;
  }
  
  public void setAeEndColor(Color AeEndColor)
  {
    this.AeEndColor = AeEndColor;
  }
  
  public boolean isAeTranspControls()
  {
    return this.AeTranspControls;
  }
  
  public void setAeTranspControls(boolean AeTranspControls)
  {
    this.AeTranspControls = AeTranspControls;
  }
  
  public int getAeGradientFocus()
  {
    return this.AeGradientFocus;
  }
  
  public void setAeGradientFocus(int AeGradientFocus)
  {
    this.AeGradientFocus = AeGradientFocus;
  }
  
  public AeGradientPanel()
  {
    setPreferredSize(new Dimension(380, 280));
    if (this.AeTranspControls) {
      setBg(true);
    } else {
      setBg(false);
    }
  }
  
  public synchronized void addMouseMotionListener(MouseMotionListener l)
  {
    super.addMouseMotionListener(l);
  }
  
  protected void paintComponent(Graphics g)
  {
    super.paintComponent(g);
    Graphics2D g2d = (Graphics2D)g;
    g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
    g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    
    int w = getWidth();
    int h = getHeight();
    Dimension arcs = new Dimension(this.AeBorderRadius, this.AeBorderRadius);
    
    GradientPaint gp = new GradientPaint(0.0F, 0.0F, this.AeStartColor, this.AeGradientFocus, h, this.AeEndColor);
    
    g2d.setPaint(gp);
    if (this.AeFillBackground == true) {
      g2d.fillRoundRect(0, 0, w - 1, h - 1, arcs.width, arcs.height);
    }
    g2d.drawRoundRect(0, 0, w - 1, h - 1, arcs.width, arcs.height);
  }
  
  private void setBg(boolean isOpaque)
  {
    Component[] components = getComponents();
    for (Component component : components)
    {
      ((JLabel)component).setOpaque(isOpaque);
      ((JCheckBox)component).setOpaque(isOpaque);
      ((JTextField)component).setOpaque(isOpaque);
      ((JPasswordField)component).setOpaque(isOpaque);
      ((JFormattedTextField)component).setOpaque(isOpaque);
      ((JToolBar)component).setOpaque(isOpaque);
      ((JRadioButton)component).setOpaque(isOpaque);
    }
  }
}