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Asked: 2026-05-23T15:41:34+00:00

I would like to use String’s replaceAll function to delete any char that is

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I would like to use String’s replaceAll function to delete any char that is not in a given set. I tried

x = x.replaceAll("^[A-Za-z]", "");

However this is not working because when placed at the beginning of the expression, the ^ character has another meaning (match the beginning of a line).

How can I get the behavior I want? I could not find any help on the correct syntax.

Thanks

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1 Answer

  1. Editorial Team

    Are you looking for the negation of the range? Then it has to be inside the brackets.

    x = x.replaceAll("[^A-Za-z]", "");

    More in the Java Doc.

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