I would like to write Java regex where plus at the beginning is optional
I try this but not working correctly
[+]+[0-9]{3,}
so that +123 and 123 is valid
What I am doing wrong?
As Hamza commented below, use [+]?[0-9]{3,}
. A question mark means one or none of the previous, which in this case means one or no + before the three numbers.
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