java - Best way to find a full word on a string -

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i'm doing project , need find full word in string example "hello stackoverflow, have nice day" want know if word "over" in string. should use tolowercase() avoid problems?

string = "hello stackoverflow"; if (a.indexof("over") >= 0)     system.out.println("found"); else     system.out.println("not found");

use tolowercase() if unsure of case.


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