Java tutorial
//package com.java2s; //License from project: Open Source License import java.io.UnsupportedEncodingException; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; public class Main { public static String md5(String s) { try { MessageDigest digester = MessageDigest.getInstance("MD5"); digester.update(s.getBytes("UTF-8")); byte[] a = digester.digest(); int len = a.length; StringBuilder sb = new StringBuilder(len << 1); for (int i = 0; i < len; i++) { sb.append(Character.forDigit((a[i] & 0xf0) >> 4, 16)); sb.append(Character.forDigit(a[i] & 0x0f, 16)); } return sb.toString(); } catch (UnsupportedEncodingException e) { return ""; } catch (NoSuchAlgorithmException e) { return ""; } } }