java - Is there a way to generate a random UUID, which consists only of numbers?

Question

Java's UUID class generates a random UUID. But this consists of letters and numbers. For some applications we need only numbers. Is there a way to generate random UUID that consists of only numbers in Java?

UUID.randomUUID();

Answer 1

If you dont want a random number, but an UUID with numbers only use:

String lUUID = String.format("%040d", new BigInteger(UUID.randomUUID().toString().replace("-", ""), 16));

in this case left padded to 40 zeros...

results for:
UUID : b55081fa-9cd1-48c2-95d4-efe2db322a54
in:
UUID : 0241008287272164729465721528295504357972