Calculates the MD5 hash of str using the RSA MD5 Message-Digest Algorithm, and returns that hash.

Secure.java

import java.security.*;

public class Secure {
	public static void main(String[] args) {

		final String pass = "password";
		String encrypted = MD5(pass);
		System.out.println("Encrypted password: " + encrypted);

	}
	public static String MD5(String md5) {
		try {

			java.security.MessageDigest md = java.security.MessageDigest.getInstance("MD5");
			byte[] array = md.digest(md5.getBytes());
			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();
		} catch (java.security.NoSuchAlgorithmException e) {

		}
		return null;

	}
}