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Asked: 2026-05-23T18:35:10+00:00

I want to split an email string in java (android) but it not work

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I want to split an email string in java (android) but it not work correctly. 

Input: "ihnel48@gmail.com"
String[] pattens = email.split("@.");
Expected: "ihnel48", "gmail", "com"
Output: "ihnel48" "mail.com"
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1 Answer

  1. Editorial Team

    Because String.split matches based on a regular expression, @. means it looks for two characters in a row (not either character once). And, . in regular expressions is a special character meaning “anything”:

    @. = "@ and then any character"

    In your case this matches “@g” and not the dot.

    Instead, you want:

    String[] pattens = email.split("[@.]");

    The square brackets, [], create a character class, which represents all the valid characters a single position can match. So, you need to match “@” or “.“. The character . does not need to be escaped inside a character class.

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