用java的jwindow实现程序运行出的splash画面。

import javax.swing.*;import java.awt.*;/*JWindow 是一个能够在用户桌面的任何地方显示的容器。所以能够使用它构成程序刚运行时的splash画面。*/public class ESplash extends JWindow implements Runnable {       private Thread thread = null;    private Image logo = null;    private Color bg_color = new Color(255, 255, 255);    private Toolkit toolkit =getToolkit();    private int image_width;    private int image_height;

    public ESplash() {      logo = new ECreateIcon().getSplashImage();      loadImage(logo, 0);      image_width = logo.getWidth(this);      image_height = logo.getHeight(this);      setBackground(bg_color);      setCursor(new Cursor(3));      setSize(image_width + 10, image_height + 10);      //设置JWindow的显示位置      int Xpos = (toolkit.getScreenSize().width - getSize().width) / 2;      int Ypos = (toolkit.getScreenSize().height - getSize().height) / 2;      setBounds(Xpos, Ypos, getSize().width, getSize().height);      setVisible(true);    }    /*     通过使用MediaTracker加载图像，确保图像被正确的加载。     图像被加载后，将进行绘图。    */    private void loadImage(Image image, int ID) {        if(image != null) {            MediaTracker tracker = new MediaTracker(this);            tracker.addImage(image, ID);            try {                tracker.waitForID(ID);            }            catch(InterruptedException _ex) { }        }    }

    /*     在JWindow部件上绘制图像。    */        public void paint(Graphics g) {        g.drawImage(logo, 5, 5, image_width, image_height, this);                //设置字体的色彩        g.setColor(new Color(102, 102, 150));        g.drawString("正在初始化系统......", 7, getSize().height - 72);        //设置矩形框的背景色彩。        g.setColor(new Color(255, 255, 255));                //绘制矩形框        g.fillRect(5, getSize().height - 70, 317, 7);        g.drawRect(5, getSize().height - 70, 317, 7);                //重新设置将要填涂在矩形框中的颜色        g.setColor(new Color(102, 102, 150));        for(int n = 0; n < 317; n += 5)            try {             //线程休眠50毫秒             Thread.sleep(50L);             //填涂矩形框             g.fillRect(5, getSize().height - 70, n, 5);            }            catch(Exception _ex) { }        }

    public void run() {        //设置鼠标为等待状态        setCursor(new Cursor(3));        repaint();    }

    public void stop() {        //结束线程        thread = null;        logo = null;    }

 //更新图形区，防止绘图时产生闪烁现象。

    public void update(Graphics g) {        paint(g);    }  }

/

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

public class ECreateIcon{  private static Image splashimage;   public ECreateIcon(){ splashimage = getImageFromResource("resources/images/Esplash.gif");   } //获得图像 private Image getImageFromResource(String image_path) {         return Toolkit.getDefaultToolkit().getImage(image_path);   }

 public ImageIcon createImageIcon(String filename) {  String path = "/resources/images/" + filename;  return new ImageIcon(getClass().getResource(path));    }      public Image getSplashImage() {       return splashimage;   }}