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使用js定时器setTimeout()方法，定时三秒将要修改的32313133353236313431303231363533e59b9ee7ad9431333361326265图片的display设为none.

setTimeout(function(){//定时器

$("img").css("display","none");//将图片的display属性设置为none

},

3000);//设置三千毫秒即3秒

你要是非要用java实现，可以试验下

public class Splash extends Canvas implements Runnable {

/**

* 声明变量

*/

public ScrawlMidlet midlet = null;

public ScreenControl scontrol;

private volatile Thread splashThread = null;

private long startTime;

private long endTime;

private int FRAME_TIME = 80;

private int width;

private int height;

private int alpha = 0;

private Image splashImage = null;

private int argb[];

private boolean isIn;

/**

* 构造函数

*/

public Splash(ScrawlMidlet midlet) {

this.midlet = midlet;

setFullScreenMode(true);

this.width = this.getWidth();

this.height = this.getHeight();

try {

splashImage = Image.createImage("/Image/lostz1.png");

} catch (java.io.IOException ex) {

System.out.println("闪屏中图片加载错误！");

}

argb = new int[splashImage.getWidth() * splashImage.getHeight()];

splashImage.getRGB(argb, 0, splashImage.getWidth(), 0, 0, splashImage.getWidth(), splashImage.getHeight());

isIn = true;

start();

}

public void start() {

splashThread = new Thread(this);

splashThread.start();

scontrol = new ScreenControl(midlet);

}

public void stop() {

splashImage = null;

splashThread = null;

System.gc();

Thread.yield();

}

public void paint(Graphics g) {

System.gc();

Thread.yield();

g.setColor(255, 255, 255);

g.fillRect(0, 0, width, height);

if (isIn) {

if (alpha < 255) {

for (int i = 0; i < argb.length; i++) {

argb[i] = (alpha << 24) | (argb[i] & 0x00FFFFFF);

}

g.drawRGB(argb, 0, splashImage.getWidth(), (width - splashImage.getWidth()) / 2,

(height - splashImage.getHeight()) / 2, splashImage.getWidth(), splashImage.getHeight(), true);

alpha += 15;

} else {

isIn = false;

g.drawImage(splashImage, width / 2, height / 2, Graphics.VCENTER | Graphics.HCENTER);

try {

Thread.sleep(500);

} catch (InterruptedException ex) {

ex.printStackTrace();

}

}

} else {

if (alpha >= 0) {

for (int i = 0; i < argb.length; i++) {

argb[i] = (alpha << 24) | (argb[i] & 0x00FFFFFF);

}

g.drawRGB(argb, 0, splashImage.getWidth(), (width - splashImage.getWidth()) / 2,

(height - splashImage.getHeight()) / 2, splashImage.getWidth(), splashImage.getHeight(), true);

alpha -= 15;

} else {

finish();

}

}

}

public void run() {

try {

Thread currentThread = Thread.currentThread();

while (currentThread == splashThread) {

startTime = System.currentTimeMillis();

repaint(0, 0, width, height);

serviceRepaints();

endTime = System.currentTimeMillis();

if (endTime - startTime < FRAME_TIME) {

Thread.sleep(FRAME_TIME - (endTime - startTime));

}

}

} catch (InterruptedException ie) {

System.out.println(ie.toString());

}

}

private void finish() {

stop();

if (scontrol == null) {

scontrol = new ScreenControl(midlet);

} else {

scontrol.show();

}

}

}

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