What do mean by java?

Answer 1

go through the course and if you face any difficulty then post that
https://www.sololearn.com/Course/Java/?ref=app

Answer 2

is a high level programming language...

you can built with a desktop applications , anything from art applications.

Answer 3

Java is a high level programs

Answer 4

https://en.m.wikipedia.org/wiki/Java_(programming_language)