Is variable name in Java case-sensitive?

The rules and conventions for naming your variables can be summarized as follows: Variable names are case-sensitive . A variable’s name can be any legal identifier — an unlimited-length sequence of Unicode letters and digits, beginning with a letter, the dollar sign ” $ “, or the underscore character ” _ “.

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Does string include case-sensitive?

Both String#includes() and String#indexOf() are case sensitive . Neither function supports regular expressions. To do case insensitive search, you can use regular expressions and the String#match() function, or you can convert both the string and substring to lower case using the String#toLowerCase() function.16 May 2019

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