What is case-sensitive language in Java?

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.16 Kas 2019

From the point of view of the language syntax, you can force certain identifiers to start with a lower or upper case (for instance Java class name). That makes parsing easier, and hence helps keeping the syntax clean.11 Kas 2011

Java is a case-sensitive language, which means that the upper or lower case of letters in your Java programs matter .