How to use java language ?

Answer 1

note: java and javascript are not even similar

Answer 2

So, what the difference between java with javascript ?

Answer 3

Key differences between Java and JavaScript:
Java is an OOP programming language while Java Script is an OOP scripting language.

Java creates applications that run in a virtual machine or browser while JavaScript code is run on a browser only.

Java code needs to be compiled while JavaScript code are all in text.

They require different plug-ins.