Is compare to case-sensitive?

Yes, == is case sensitive .

You can compare two strings using either equals() method or compareTo() method . Where, The equals() method compares this string to the specified object.

Text or typed input that is sensitive to capitalization of letters . For example, “Computer” and “computer” are two different words because the “C” is uppercase in the first example and lowercase in the second example. On modern systems, passwords are case-sensitive, and usernames are usually case-sensitive as well.