求教一个java摄像头实时摄像程序。该怎么解决

package com.redtroy; 
  
 import javax.media.Player; 
 import javax.media.CaptureDeviceInfo; 
 import javax.media.MediaLocator; 
 import javax.swing.*; 
 import java.awt.*; 
 import java.awt.image.*; 
 import java.awt.event.*; 
 import javax.media.control.FrameGrabbingControl; 
 import javax.media.Buffer; 
 import javax.media.util.BufferToImage; 
 import javax.media.format.VideoFormat; 
 import java.io.*; 
 import com.sun.image.codec.jpeg.*; 
 import javax.media.CaptureDeviceManager; 
 import javax.media.Manager; 
 import java.net.*; 
 import java.applet.*; 
  
 //import javax.swing.im 
 /** 
  *  <p>Title:  </p> 
  *  <p>Description:  </p> 
  *  <p>Copyright: Copyright (c) 2005 </p> 
  *  <p>Company:  </p> 
  * @author not attributable 
  * @version 1.0 
  */ 
  
 public class Camera 
   extends JFrame { 
 private static Player player = null; 
 private CaptureDeviceInfo device = null; 
 private MediaLocator locator = null; 
 private Buffer buffer = null; 
 private BufferToImage b2i = null; 
 private Image image; 
 private ImageIcon iicon = new ImageIcon(); 
 boolean proportion = true; 
 String str1 = "vfw:Logitech USB Video Camera:0"; 
 String str2 = "vfw:Microsoft WDM Image Capture (Win32):0"; 
 JButton jButton1 = new JButton(); 
 JButton jButton2 = new JButton(); 
 Component component1; 
 JLabel jLabel1 = new JLabel(); 
 public Camera() { 
   super("troy的摄像机(无保存功能)"); 
   try { 
   jbInit(); 
   } 
   catch (Exception e) { 
   e.printStackTrace(); 
   } 
 } 
  
 public Image resize(int width, int height, Image source, boolean flag) { 
   this.proportion = flag; 
   int new_w; 
   int new_h; 
   Toolkit tk = Toolkit.getDefaultToolkit(); 
   Applet app = new Applet(); 
   MediaTracker mt = new MediaTracker(app); 
   Image img = source; 
   try { 
   mt.addImage(img, 0); 
   mt.waitForID(0); 
   } 
   catch (Exception e) { 
   e.printStackTrace(); 
   } 
   if (img.getWidth(null) == -1) { 
   System.out.println(" can't read,retry!" + " <BR>"); 
   return null; 
   } 
   else { 
  
   if (this.proportion == true) { //判断是否是等比缩放. 
 //为等比缩放计算输出的图片宽度及高度 
     double rate1 = ( (double) img.getWidth(null)) / (double) width + 
       0.1; 
     double rate2 = ( (double) img.getHeight(null)) / (double) height + 
       0.1; 
     double rate = rate1 > rate2 ? rate1 : rate2; 
     new_w = (int) ( ( (double) img.getWidth(null)) / rate); 
     new_h = (int) ( ( (double) img.getHeight(null)) / rate); 
   } 
   else { 
     new_w = width; //输出的图片宽度 
     new_h = height; //输出的图片高度 
   } 
   } 
   BufferedImage buffImg = new BufferedImage(new_w, new_h, 
                       BufferedImage.TYPE_INT_RGB); 
  
   Graphics g = buffImg.createGraphics();