Validation for Version number
JAVAians
i have a small requirement which i am doin in java swing. i need to validate a field which will accept only numbers and dots.
for example:
i have a version number field which has to accept only in format like ***.***.***.***
but the numbers between the dots can vary accordingly. and the length can also vary
note:
[1.0.0.1] or [111.0.0.0] or [111.11.0.0] or [111.111.12.1] and so on...
or
[1.0] or [12.0] or [1.2.0]
PraDz
Simple IP-address matching
\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\b
but this will allow i.e. 666.666.666.666 (and we all know who has that IP...)
Complex:
\b(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b
(all in one line)
Lajma at 2007-7-14 22:24:09 >
> thank lajm
>
> but this will not solve my problem,.
>
> this will allow numbers and dots and we cant make it
> optinal like 1.0.0.0 or 1.0.0 or 1.0.0.0
Ah, you mean like this:
String numbers = "(?:[0-9]|[1-9][0-9]|[1-9][0-9][0-9])";
Pattern versionPattern = Pattern.compile("^(?:"+numbers+"\\.){0,3}"+numbers+"$");
This will allow any version number that match a number from 0 to 999 and it will require at least one but at most 4 levels.
A singel "1" would match, 1.1, 1.4.2 and 1.5.0.2 but not 8.1.9.1.4.
If you want to restrict it so that you only alow "major.minor" (ie. 1.0), then change the {0,3} to {1,3}.
Lajma at 2007-7-14 22:24:09 >
