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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.
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The fromString() method of UUID class in Java is used for the creation of UUID from the standard string representation of the same. Parameters: The method takes one parameter UUID_name which is the string representation of the UUID. Return Value: The method returns the actual UUID created from the specified string.
The fromString(String name) method is used to create a UUID from the string standard representation as described in the toString() method.
The randomUUID() method is used to retrieve a type 4 (pseudo randomly generated) UUID. The UUID is generated using a cryptographically strong pseudo random number generator.
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.
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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).
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