Java GlassPane进度条遮罩

 package com.swing.demo;

 import java.awt.BorderLayout;
 import java.awt.Dimension;
 import java.awt.FlowLayout;
 import java.awt.Toolkit;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;

 import javax.swing.ImageIcon;
 import javax.swing.JButton;
 import javax.swing.JFrame;
 import javax.swing.JLabel;
 import javax.swing.JPanel;

 public class LoadingGlassPane extends JPanel {
     private static final String ICON_PATH = System.getProperty("user.dir")
             + "\\icos\\loading.gif";
     private static final long serialVersionUID = 1L;

     public LoadingGlassPane() {
         setLayout(new BorderLayout());
         setOpaque(false);
         add(new JLabel(new ImageIcon(ICON_PATH)));
         addMouseListener(new MouseAdapter() {
             @Override
             public void mousePressed(MouseEvent e) {
                 super.mousePressed(e);
             }
         });
     }

     public static void main(String[] args) {
         JFrame frame = new JFrame("GlassPane");
         LoadingGlassPane glassPane = new LoadingGlassPane();
         frame.setGlassPane(glassPane);
         JButton button = new JButton("查询");
         button.addMouseListener(new GlassMouseAdapter());
         frame.getContentPane().setLayout(new FlowLayout());
         frame.getContentPane().add(button);
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         // 窗体居中
         Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
         frame.setSize(400, 320);
         frame.setLocation((d.width - frame.getSize().width) / 2,
                 (d.height - frame.getSize().height) / 2);
         frame.setVisible(true);
     }
 }

 package com.swing.demo;

 import java.awt.Component;
 import java.awt.Container;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;

 import javax.swing.JButton;
 import javax.swing.JDialog;
 import javax.swing.JFrame;

 public class GlassMouseAdapter extends MouseAdapter {
     @Override
     public void mouseClicked(MouseEvent e) {
         JButton button = (JButton) e.getSource();
         Container container = (Container) button.getTopLevelAncestor();
         System.out.println(container.getClass().getName());
         Component glassPane = null;
         if (container instanceof JFrame) {
             glassPane = ((JFrame) container).getGlassPane();
         } else if (container instanceof JDialog) {
             glassPane = ((JDialog) container).getGlassPane();
         }

         doClick(button, glassPane);
     }

     private void doClick(JButton button, Component glassPane) {
         if (null == glassPane) {
             return;
         }
         new Thread() {
             public void run() {
                 button.setEnabled(false);
                 glassPane.setVisible(true);
                 try {
                     Thread.sleep(2000);
                 } catch (InterruptedException e) {
                     e.printStackTrace();
                 }
                 glassPane.setVisible(false);
                 button.setEnabled(true);
             }
         }.start();
     }
 }