题目：使用进度条的一个例子。图片自己找一个几个啊！
package com.tengfei.chap11; import javax.swing.*; import java.awt.*; import java.net.*; public class JSplashWindowEx extends JWindow implements Runnable { Thread splashThread=null; private JProgressBar progress; public JSplashWindowEx() { setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR)); JPanel splash = new JPanel(new BorderLayout()); URL url = getClass().getResource("/images/winter.jpg"); if(url != null){ splash.add(new JButton(new ImageIcon(url)), BorderLayout.CENTER); } progress = new JProgressBar(1,100); progress.setStringPainted(true); progress.setBorderPainted(false); progress.setString("Program is Now Loading..."); progress.setBackground(Color.white); splash.add(progress,BorderLayout.SOUTH); setContentPane(splash); Dimension screen = getToolkit().getScreenSize(); pack(); setLocation((screen.width - getSize().width) / 2, (screen.height - getSize().height) / 2); } public void start(){ this.toFront(); splashThread=new Thread(this); splashThread.start(); } public void run(){ show(); try { for (int i=0;i<100;i++){ Thread.sleep(100); progress.setValue(progress.getValue() + 1); } } catch (Exception ex) { ex.printStackTrace(); } dispose(); } static void showFrame(String title){ JFrame frame = new JFrame(title); frame.setSize(640,480); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //Center the window Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); Dimension frameSize = frame.getSize(); if (frameSize.height > screenSize.height) { frameSize.height = screenSize.height; } if (frameSize.width > screenSize.width) { frameSize.width = screenSize.width; } frame.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2); try { Thread.sleep(10000); } catch (Exception ex) { ex.printStackTrace(); } frame.setVisible(true); } public static void main(String[] args) { JSplashWindowEx splash = new JSplashWindowEx(); splash.start(); showFrame("Splash window demo"); } }
