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Editorial Team
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Asked: 2026-05-13T22:59:07+00:00

I am looking for a Java regex way of replacing multiple spaces with non-breaking

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I am looking for a Java regex way of replacing multiple spaces with non-breaking spaces. Two or more whitespaces should be replaced with the same number of non-breaking spaces, but single whitespaces should NOT be replaced. This needs to work for any number of whitespaces. And the first characters could be 1 or more whitespaces.

So if my String starts off like this:

TESTING THIS  OUT   WITH    DIFFERENT     CASES

I need the new String to look like this: 

TESTING THIS  OUT   WITH    DIFFERENT     CASES
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1 Answer

  1. Editorial Team

    You could also skip the regex all together.

    String testStr = "TESTING THIS  OUT   WITH    DIFFERENT     CASES";
String _replaced = testStr.replace("  ", "  ");
String replaced = _replaced.replace("  ", "  ");

    I haven’t tested this but the first one finds all cases of two spaces and replaces them with non-breaking spaces. The second finds cases where there were an odd number of white-spaces and corrects it with two nbsps.

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