Can anyone explain me where we have to use Upper case and where we have to use lower case in Java?

Question

I am a beginner to Java and I noticed that when I change the case of the first letter then the function of the object changes. Can anyone please explain me why this happens and where I have to use Upper cases and where I have to use lower cases. I would be very grateful if someone could help me. Thank You.

Answer 1

spidy OK, I think Java is advising you to use lowercase in variable names, because first letter uppercase is reserved to class names.

Answer 2

Where are you seeing differences in case?

When using objects of different types, maybe?

I ask because Java is case-sensitive, as most modern programming languages.

Answer 3

I used a string in the following way:-

String Food;
Food =?;
So here "Food" was not accepted as a string because it was in upper case. Can you please explain why?
And thank you for replying.