Works like a charm, the solution I was using,

String md5 = new BigInteger( 1, md.digest() ).toString(16);

wanted to truncated leading 0's, this one doesn't.

I used your code but modified it so I can hash strings and other objects.

    public static String getHash(Object o)
    {
    	try
    	{
    		MessageDigest mdAlgorithm = MessageDigest.getInstance("MD5");
    		ByteArrayOutputStream baos = new ByteArrayOutputStream();
    		ObjectOutputStream oos = new ObjectOutputStream(baos);
    		oos.writeObject(o);
    		mdAlgorithm.update(baos.toByteArray());

    		byte[] digest = mdAlgorithm.digest();
    		StringBuffer hexString = new StringBuffer();

    		for (int i = 0; i < digest.length; i++)
    		{
    			String x = Integer.toHexString(0xFF & digest[i]);
    			if (x.length() < 2) x = "0" + x;
    			hexString.append(x);
    		}
    		return(hexString.toString());
    	}
    	catch(NoSuchAlgorithmException e) { return(null); }
    	catch(IOException e) { return(null); }
    }

Thanks! This solution saves me some time ;)

<script>
var i=0;
while (var<5)
{
documnet.write("Hello World!");
var=var+1;
}
</script>

Excellent example!

I'm just starting out building Java apps and need to add some authentication.

I decided upon storing user details in a plain text file (college project - simplest option - not allowed to use a DB) and wanted to shadow passwords. Now I can!

nice job!!!