Easiest way in Java to turn String into UUID

Question

How to generate a valid UUID from a String? The String alone is not what I'm looking for. Rather, I'm looking for something like a hash function converting any String to a valid UUID.

Answer 1

Try this out:

String superSecretId = "f000aa01-0451-4000-b000-000000000000";
UUID.fromString(superSecretId);

I am using this in my project and it works. Make sure you import the right stuff.

Answer 2

In the Java core library, there's java.util.UUID.nameUUIDFromBytes(byte[]).

I wouldn't recommend it because it's UUID 3 which is based on MD5, a very broken hash function. You'd be better off finding an implementation of UUID 5, which is based on SHA-1 (better although also sort of broken).