Is java case sensitive?

Answer 1

Yes.

Answer 2

yes java uses camel case instead of pascal case
for example:
camel case: helloWorld
pascal case : HelloWorld

Answer 3

yes, for example you can use upper case for final values, and have the same name in a field using camel case.

Answer 4

yesJavaLikesYouToTalkToItLikeThis....