如何捕获视频。

捕获当前屏幕图像。
希望多多交流。8-）
package com.borland.samples.welcome;
/**
* Title:
* Description:
* Copyright:    Copyright (c) 2001
* Company:
* @author
* @version 1.0
*/
import java.awt.*;
import java.awt.image.*;
import com.sun.image.codec.jpeg.*;
class ImageCanvas extends Canvas{
  private Image image;
  private Dimension prefSize;
  public ImageCanvas(Image image){
    this.image = image;
    calculatePreferredSize();
  }
  public void setImage(Image image){
    this.image = image;
    calculatePreferredSize();
    repaint();
  }
  private void calculatePreferredSize(){
    prefSize = new Dimension(image.getWidth(this),image.getHeight(this));
    System.out.println(image.getWidth(this));
    setSize(prefSize);
  }
  public Dimension getPreferredSize() {
     return prefSize;
  }
  public Dimension getMinimumSize() {
     return prefSize;
  }
  public void update(Graphics g){
     paint(g);
  }
  public void paint(Graphics g){
     g.drawImage(image,0,0,null);
  }
}
class ImageUtils{
  public static Image getScreenImage(){
    Robot robot;
    try {
      robot = new Robot();
    }catch(Exception e) {
      throw new RuntimeException("unable to construct Robot");