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javarandomuuid

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

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();
Solution

  • 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