Java tutorial
//package com.java2s; import java.math.BigInteger; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; public class Main { public static String hashMD5(String s) { try { MessageDigest m = MessageDigest.getInstance("MD5"); m.update(s.getBytes(), 0, s.length()); String result = new BigInteger(1, m.digest()).toString(); while (result.length() < 32) { result = "0" + result; } return result; } catch (NoSuchAlgorithmException e) { return null; } } }