Java实现Swing组件定制Button示例

package themedemo;
import java.awt.BasicStroke;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.GridLayout;
import java.awt.RenderingHints;
import java.util.Map;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.Painter;
import javax.swing.SwingUtilities;
import javax.swing.UIDefaults;
import javax.swing.UIManager;
import javax.swing.WindowConstants;
public class ButtonSkinDemo {
 public static void main(String[] args) {
  SwingUtilities.invokeLater(new Runnable() {
   public void run() {
    for (UIManager.LookAndFeelInfo laf : UIManager
      .getInstalledLookAndFeels()) {
     if ("Nimbus".equals(laf.getName())) {
      try {
       UIManager.setLookAndFeel(laf.getClassName());
      } catch (Exception e) {
       e.printStackTrace();
      }
     }
    }
    for (Map.Entry entry : UIManager
      .getLookAndFeelDefaults().entrySet()) {
     if ((entry.getKey().toString()).startsWith("Button")) {
      System.out.println(entry.getKey() + " = "
        + entry.getValue());
     }
    }
    JFrame frame = new JFrame("www.jb51.net - Button Skining Demo");
    frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    frame.getContentPane().setLayout(new BorderLayout());
    JPanel panel = new JPanel(new GridLayout(0, 1, 20, 20));
    panel.setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
    panel.setBackground(Color.darkGray);
    UIDefaults buttonDefaults = new UIDefaults();
    buttonDefaults.put("Button.backgroundPainter",
      new Painter() {
       public void paint(Graphics2D g, JComponent c,
         int w, int h) {
        g.setRenderingHint(
          RenderingHints.KEY_ANTIALIASING,
          RenderingHints.VALUE_ANTIALIAS_ON);
        g.setStroke(new BasicStroke(2f));
        g.setColor(Color.WHITE);
        g.fillRoundRect(0, 0, w - 2, h - 2, 8, 8);
        g.setColor(Color.LIGHT_GRAY);
        g.drawRoundRect(0, 0, w - 2, h - 2, 8, 8);
       }
      });
    buttonDefaults.put("Button[Pressed].backgroundPainter",
      new Painter() {
       public void paint(Graphics2D g, JComponent c,
         int w, int h) {
        g.setRenderingHint(
          RenderingHints.KEY_ANTIALIASING,
          RenderingHints.VALUE_ANTIALIAS_ON);
        g.setStroke(new BasicStroke(2f));
        g.setColor(Color.LIGHT_GRAY);
        g.fillRoundRect(0, 0, w - 2, h - 2, 8, 8);
       }
      });
    JButton button = new JButton("myButton");
    panel.add(button);
    button.putClientProperty("Nimbus.Overrides", buttonDefaults);
    button.putClientProperty("Nimbus.Overrides.InheritDefaults",
      false);
    // Add a normal themed slider for comparison
    JButton normalButton = new JButton("normalButton");
    panel.add(normalButton);
    frame.getContentPane().add(panel, BorderLayout.CENTER);
    frame.pack();
    frame.setLocationRelativeTo(null);
    frame.setVisible(true);
   }
  });
 }
}