java regex for validate id

Question

I want validate ID using java regex.

Here's the code I've tried:

boolean x=l.matches("(?i)[A-Z]{2}-\\[2-3]");

I used "HT-43" as input. I want to get answer as "YES" but I get "NO".

I don't understand why, since you begin your pattern with [A-Z]{2} (that is correct and make sense), you ends your pattern with \\[2-3] that doesn't make sense at all! You have missed something in the regex tutorial or something is missing in the question. Read it one more time, otherwise you will always ask this kind of strange questions. — Casimir et Hippolyte
– Casimir et Hippolyte, Commented May 29, 2017 at 23:07

Michael Markidis · Accepted Answer · 2017-05-29 23:05:04Z

3

You were close, try the following:

String num = "HT-43";

boolean x=num.matches("[A-Z]{2}-\\d{2,5}");

System.out.println(x);

Outputs:

true

Demo: https://regex101.com/r/UWGyB3/1

answered May 29, 2017 at 22:59

Michael Markidis

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