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Asked: 2026-05-13T21:05:23+00:00

How can I get the int value from a string such as 423e –

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How can I get the int value from a string such as 423e – i.e. a string that contains a number but also maybe a letter?

Integer.parseInt() fails since the string must be entirely a number.

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1 Answer

  1. Editorial Team

    Replace all non-digit with blank: the remaining string contains only digits.

    Integer.parseInt(s.replaceAll("[\\D]", ""))

    This will also remove non-digits inbetween digits, so "x1x1x" becomes 11.

    If you need to confirm that the string consists of a sequence of digits (at least one) possibly followed a letter, then use this:

    s.matches("[\\d]+[A-Za-z]?")
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