Implementation of MD5 Algorithm in Java

java Program

import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class JavaMD5Hash {
 public static void main(String[] args) {
  System.out.println("For null " + md5(""));
  System.out.println("For simple text "+ md5("This is my text"));
  System.out.println("For simple numbers " + md5("12345"));
 }
 public static String md5(String input) {
  String md5 = null;
  if(null == input) return null;
  try {
   //Create MessageDigest object for MD5
   MessageDigest digest = MessageDigest.getInstance("MD5");
   //Update input string in message digest
   digest.update(input.getBytes(), 0, input.length());
   //Converts message digest value in base 16 (hex) 
   md5 = new BigInteger(1, digest.digest()).toString(16);
  }
  catch (NoSuchAlgorithmException e) {
   e.printStackTrace();
  }
  return md5;
 }
}