gistfile1.java

	// includes http://stackoverflow.com/questions/332079/in-java-how-do-i-convert-a-byte-array-to-a-string-of-hex-digits-while-keeping-l
       public static void main(String[] args) throws Exception {
		String stringToEncrypt = "foobar";
		MessageDigest md = MessageDigest.getInstance("MD5");
		md.update(stringToEncrypt.getBytes("UTF-8"));
		byte messageDigest[] = md.digest();
		StringBuffer hexString = new StringBuffer();
		for (int i=0;i<messageDigest.length;i++) {
			String hex = Integer.toHexString(0xFF & messageDigest[i]);
			if (hex.length() == 1) {
			    // could use a for loop, but we're only dealing with a single byte
			    hexString.append('0');
			}
			hexString.append(hex);
		}
		System.out.println(hexString.substring(0, 10));
	}