Zip code validator regular expression

To indicate the the dash and space is optional, we can add a zero-or-more quantifier? To fix this, we need to indicate that the part of the expression after the initial 5 digits is optional. We do this by first enclosing the latter part in parentheses to indicate a group:.

To indicate that the group is optional, we can place a zero-or-more quantifier? This quantifier will ensure that our expression will match all variations the 9-digit ZIP code, but also the simple 5-digit code. The following expression is pretty lenient on the format and should accept , , Again, you should rely on other methods since the regular expressions here will only validate the format. Make use of the Luhn algorithm to properly validate a card.

Make sure to be in global mode g flag , case insensitive and to have the dot all option on. This regular expression will match all HTML tags and their attributes. Make sure to be in global and multiline mode. Use an empty string as a replacement value. Regular Expression Tester This free regular expression tester lets you test your regular expressions against any entry of your choice and clearly highlights all matches. Regular expression :.

Forces usage of same separator across date. Used to indicate that the next character should NOT be interpreted literally. Matches the beginning of the input. Matches the end of the input. Matches 'x' but does NOT remember the match. Matches 'x' only if 'x' is NOT followed by 'y'. Matches the preceding character at least n times and at most m times.

Matches any of the enclosed characters. Matches anything NOT enclosed by the brackets. Compile the ReGex. If the pin code is empty. Pattern class contains matcher method. Return True if the pin code. Test case 1.

Test case This code is contributed by AnkitRai Output: true true false false. Next How to build a simple Calculator app using Android Studio? Recommended Articles. AjaySuwalka: All you would have to do to accommodate for with no space is place a? A little late to the party, and maybe not the prettiest bell at the ball, but I've added additional optional spaces on either side of the hyphen - mostly for aesthetics.

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