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Asked: 2026-05-15T16:34:49+00:00

public static final String REGEX_ADDRESS_ZIP = ^[0-9\\ -.]+$; The above regex for validating zip

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public static final String REGEX_ADDRESS_ZIP = "^[0-9\\ -.]+$";

The above regex for validating zip code seems to allow exclamation (!) even though I haven’t allowed it here. Not sure what the mistake is? Do I need to change the regex pattern

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1 Answer

  1. Editorial Team

    The hyphen - is a metacharacter inside character classes unless it is the first or last character. Change it to:

    ^[0-9\\ .-]+$

    [0-9\\ -.] means any character from 0 to 9 (all digits), the backslash \, and any character from space (ASCII 32) to period (ASCII 46) which translates to:

     !"#$%&'()*+,-.
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