openmw.org

Hello everyone
There is something to do for a person who can code in Java?
Once I code a little C++, but it was few years ago and very basic stuff.

Java

No wonder, considering what you've done with Nerevar, dirty traitor! /s

Well, not really, no. However, since Java's syntax is somewhat similar to one in C-like languages, you'll learn C++ faster than if you were coding on, say, Python.

My suggestion, go to your local library and borrow those two books, both are from the 2013:
. The C++ Programming Language (4th Edition)
. A Tour of C++

From the first, read the section for Java programmers and keep it as reference if needed. Read the second.

No spoilers! I have not finished main quest yet

The problem is that I have studied C++ for few months but couldn't grasp this language.
Because of that I write in Java.