Here you can find the source of MD5(String md5)
public static String MD5(String md5)
//package com.java2s; public class Main { public static String MD5(String md5) { try {/*from w w w . j a v a 2 s. c om*/ java.security.MessageDigest md = java.security.MessageDigest .getInstance("MD5"); byte[] array = md.digest(md5.getBytes()); StringBuffer sb = new StringBuffer(); for (int i = 0; i < array.length; ++i) { sb.append(Integer.toHexString((array[i] & 0xFF) | 0x100) .substring(1, 3)); } return sb.toString(); } catch (java.security.NoSuchAlgorithmException e) { } return null; } }