md5.java

MessageDigest digest;
byte[] hash;
String name = "http://test.com/d0d5689be9f9c8b5.jpg";
try {
   digest = java.security.MessageDigest.getInstance("MD5");
   digest.update(name.getBytes("UTF-8"));
   hash = digest.digest();
   BigInteger bigInt = new BigInteger(1, hash);
   String hashtext = bigInt.toString(16);
   while(hashtext.length() < 32 ){
       hashtext = "0"+hashtext;
   }
   System.out.println(hashtext);
} catch (NoSuchAlgorithmException e1) {
   e1.printStackTrace();
} catch (UnsupportedEncodingException e) {
   e.printStackTrace();
}