Java - Hash algorithms - Fastest implementations

Question

I want to know what is the best and fastest implementation of hash algorithms for Java especially MD5 and SHA-2 512 (SHA512) or 256. I want a function to get a string as an

Answer 1

Check these out: Lots of SHA / MD5 examples

Also: From same thread: Fast MD5

String hash = MD5.asHex(MD5.getHash(new File(filename)));