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Asked: 2026-05-13T17:28:22+00:00

I have two String s, str1 and str2 . How do I check if

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I have two Strings, str1 and str2. How do I check if str2 is contained within str1, ignoring case?

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  1. Editorial Team
    str1.toUpperCase().contains(str2.toUpperCase())

    UPD:

    Original answer was using toLowerCase() method. But as some people correctly noticed, there are some exceptions in Unicode and it’s better to use toUpperCase(). Because:

    There are languages knowing more than one lower case variant for one upper case variant.

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