I want to fix my game editor so it works with Java 11, it is broke in Java 11 although in compiles and runs with java 8 because of variables, but I don't know where to begin to fix it.
I have all this stuff I need to fix, and no idea where to start.
I already know about SDKman and Intelij IDE.
So, any help would be appreciated (tutorials, where to start on a project like that, how to replace variables.
Else I fear I will be spending years and looking at irrelevant stuff and by that time it will be Java 15!