MD5

public class MD5 {

 public static String create(String s) {  try {   MessageDigest md5 = MessageDigest.getInstance("MD5");

   byte[] byteArray = s.getBytes("ISO-8859-1");   byte[] md5Bytes = md5.digest(byteArray);

   StringBuffer hexValue = new StringBuffer();

   for (int i = 0; i < md5Bytes.length; i++) {    int val = ((int) md5Bytes[i]) & 0xff;    if (val < 16)     hexValue.append("0");    hexValue.append(Integer.toHexString(val));   }

   return hexValue.toString();

  } catch (Exception e) {   e.printStackTrace();   return null;  } }

}