Whether a programming language should be case sensitive or not tends to divide opinion amongst programmers. Regardless of the debate it's important to remember that Java is case sensitive.
It simply means that the case of the letters in your Java programs matter. For example, suppose you decide to create three variables called "endLoop", "Endloop", and "EnDlOoP". Even though in English we see the variable names as saying the same thing, Java does not. It will treat them all differently.
