Simple threaded app breaks on openStream method

// BEGIN TESTURL CLASS
import java.io.*;

public class TestURL {
  static boolean listening = true;

public static void main(String[] args) throws IOException {
        System.out.println("Starting...");
      ImageDownloader id1 = null;
      ImageDownloader id2 = null;

  id1 = new ImageDownloader("http://www.visnat.com/entry/vnimages/
workplace1.jpg","1");
        id2 = new ImageDownloader("http://www.visnat.com/entry/vnimages/
workplace2.jpg","2");
        System.out.println("Starting threads...");
        id1.start();
        id2.start();
        System.out.println("After threads...");
    }

}
import java.io.*;

public class TestURL {
  static boolean listening = true;

    public static void main(String[] args) throws IOException {
        System.out.println("Starting...");
      ImageDownloader id1 = null;
      ImageDownloader id2 = null;

  id1 = new ImageDownloader("http://www.visnat.com/entry/vnimages/
workplace1.jpg","1");
        id2 = new ImageDownloader("http://www.visnat.com/entry/vnimages/
workplace2.jpg","2");
        System.out.println("Starting threads...");
        id1.start();
        id2.start();
        System.out.println("After threads...");
    }

}
// END TESTURL CLASS

// BEGIN IMAGEDOWNLOADER CLASS
import java.io.*;
import java.net.*;

public class ImageDownloader extends Thread {
 private static final boolean DEBUG = true;
 private String strUrl;
 private String strOutFileName = "memory";
 private String TID;
 private int i = 0;

 public ImageDownloader(String theurl,String threadID) {
  strUrl = theurl;
  TID = threadID;
 }

 public void run() {
  System.out.println("Starting thread");
  URL url;
  InputStream is = null;

  while(i < 2) {
   i++;
   try {
     long numMillisecondsToSleep = 1000;
     Thread.sleep(numMillisecondsToSleep);
   } catch (InterruptedException e) {
     return;
   }

  try {
    url = new URL(strUrl);
    is = url.openStream(); //throws an IOException
  } catch (IOException ioe) {
    System.out.println(TID + ": the url openstream call failed:" +
ioe);
  }

   try {
    if (DEBUG) System.out.println("Thread " + TID + ": Starting save
of " + strUrl + " to " + strOutFileName + " ...");
    BufferedInputStream bis=new BufferedInputStream(is);
    byte[] buff = new byte[4096];
    byte[] buff2 = new byte[32767];
    int bytesRead;
    int buff2Offset=0;

    while(-1 != (bytesRead = bis.read(buff, 0, buff.length))) {
     System.arraycopy(buff, 0, buff2, buff2Offset, bytesRead);
     buff2Offset += bytesRead;
    }
    if (DEBUG) System.out.println("Thread " + TID + ": Task " + i+ ":
" + buff2Offset + " bytes read into memory buffer.");
    if (DEBUG) System.out.println("Thread " + TID + ": done with task
" + i);
   }
   catch (Exception e)
   {
    System.out.println("Exception happened : " + e);
   } //END TRY
  } //END WHILE
} //END RUN()

}
// END IMAGEDOWNLOADER CLASS