plugin problem

I am working on an RPG MV project.
But I don't know how to play JAVA. 
There are many scripts in the post, but I don't know how to add them. And I don't know what to get. 
I have an ABS-based project. I want to have more image frames based on it.
I love RPG MV. Please give me some consideration.
I'd like to know how to script a plug-in or change a post to a plug-in.