XMP Dumper reduced

I was able to trim this one down a bit more.

import java.io.*;

public class XMPDumper {
  
   public String getXMP(File f) throws IOException {
      return getXMP(new FileInputStream(f));
   }
 
   public String getXMP(InputStream is)
      throws IOException {
     for (int i=0;(i=is.read())!=-1;)
       if (i==0xFF && is.read()==0xE1) {
         String result = getXMPSegment(is);
         if (result.startsWith("http://ns.adobe.com/xap/1.0/"))
            return result.substring(29);
       }
     return null;
   }

   private String getXMPSegment(InputStream is)
      throws IOException {
      DataInputStream dis = new DataInputStream(is);
      byte[] buffer = new byte[dis.readShort()-2];
      dis.read(buffer);
      return new String(buffer);
   }
}