Here you can find the source of md5(final String s)
public static final String md5(final String s)
//package com.java2s; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; public class Main { public static final String md5(final String s) { try {//from w w w . ja v a 2 s . c om // Create MD5 Hash MessageDigest digest = java.security.MessageDigest .getInstance("MD5"); digest.update(s.getBytes()); byte messageDigest[] = digest.digest(); // Create Hex String StringBuffer hexString = new StringBuffer(); for (int i = 0; i < messageDigest.length; i++) { String h = Integer.toHexString(0xFF & messageDigest[i]); while (h.length() < 2) h = "0" + h; hexString.append(h); } return hexString.toString(); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } return ""; } }