Answer: How to generate a random alpha-numeric string

VOTE: one line can do the trick is much better forever, how to generate a random alpha-numeric string answer re: How to generate a random alpha-numeric string Mar 1 '18 1 Here's a simple one-liner using UUIDs as the character base and being able to specify (almost) any length. (Yes, I know that using a UUID has been suggested before.) public static String randString(int length) { return UUID.randomUUID().toString().replace("-", "").substring(0, Math.min(length, 32)) + (length > 32 ? randString(length - 32) : "");… Open Full Answer

Apr 24, 2025 - 06:45

VOTE: one line can do the trick is much better forever,
how to generate a random alpha-numeric string

Mar 1 '18

Here's a simple one-liner using UUIDs as the character base and being able to specify (almost) any length. (Yes, I know that using a UUID has been suggested before.)

public static String randString(int length) {
    return UUID.randomUUID().toString().replace("-", "").substring(0, Math.min(length, 32)) + (length > 32 ? randString(length - 32) : "");

…

Open Full Answer