Send/Recv Zipped Data via HTTP

I am trying to write a Servlet that sends compressed  data (such as XML) over HTTP to a Java client.  Here is a simple code snippet that is not working.  Anyone know why this fails?  

executing the client code results in the following:

java.util.zip.ZipException: unknown compression method


===============================================
SERVER CODE
===============================================

public void doGet(HttpServletRequest request,
                  HttpServletResponse response) throws
                                                ServletException,
                                                IOException {
       
  // imported java.util.zip.DeflaterOutputStream    

  String message = "Hello world";
       
  // Create DeflaterOutputStream that writes compressed
  // data to ByteArrayOutputStream
  ByteArrayOutputStream byteOut = new ByteArrayOutputStream(message.length());
  DeflaterOutputStream compOut = new DeflaterOutputStream(byteOut);
  compOut.write(message.getBytes());
  compOut.close();

       
  // write compressed bytes out to client
  response.getOutputStream().write(byteOut.toByteArray());
  response.getOutputStream().close();
}



===============================================
CLIENT CODE
===============================================
public static void main(String[] args) {
  try {
    // open connection to servlet that feeds us compressed data
    // and read it into byte array
    URL url = new URL("http://localhost:8080/ZipServlet/zipservlet?val=test");
    URLConnection uConn = url.openConnection();
    InputStream in =  uConn.getInputStream();
    byte[] bytes = new byte[in.available()];

    // deflate using java.util.zip.InflaterInputStream
    ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
    InflaterInputStream inflater = new InflaterInputStream(bis);
    InputStreamReader in = new InputStreamReader(inflater);
    char[] chars = new char[512];
    StringBuffer buf = new StringBuffer(512);
    int num = 0;
    while ((num = in.read(chars)) > 0) {
        buf.append(chars, 0, num);
    }
    String result = buf.toString();
    System.out.println("DECOMP: " + result);
  }
  catch (Exception ex) {
    ex.printStackTrace();
  }
}