Java tutorial
//package com.java2s; //License from project: Open Source License import java.security.MessageDigest; public class Main { private static final String MD5 = "MD5"; private static final String CHARSET_NAME = "UTF-8"; private static String getMd5(String md5) throws Exception { MessageDigest md = java.security.MessageDigest.getInstance(MD5); byte[] array = md.digest(md5.getBytes(CHARSET_NAME)); 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(); } }