CODEWITHSUNDEEP
javaregex
elcharrua
elcharrua

Reputation: 1682

Regular Expression check length

I have been trying to make a regular expression for my mobile phones but I can't seem to get it to work:

Here are the conditions for my regular expression:

Here is my regular expression: 

[0]{1}[9]{1}[0-9]{7}

Valid mobile number 091123456

Invalid mobile number 0991234567 || 09912345

Upvotes: 2

Views: 4697

Answers (2)

Per Huss
Per Huss

Reputation: 5095

If you use matcher.contains() instead of matcher.find() it will match against the whole string instead of trying to find a matching substring. Or you can add ^ and $ anchors as suggested in other answer.

If you don't really need to use a regexp, perhaps it would be more readable to just use

string.startsWith("09") && string.length() == 9

Upvotes: 1

SCouto
SCouto

Reputation: 7928

Easiest way: 

^09[0-9]{7}$

Explanation:

^09 => begins by 09

[0-9] => any character between 0 and 9

{7} exactly seven times

$ => Ends with the latest group ([0-9]{7})

Upvotes: 4

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