I do believe it's possible to 'Plug In' to a running Java process.In example
: Intercept / Manipulate data of the program/process.
Lol, my example is of the game 'Rune Scape' (Programmed in Java).
If somebody were to download and run:http://cheatengine.org/
They would be able to 'Plug In' to almost any running process on their computer and manipulate it to their likings.In example
: If your game has a variable for 'Gold' they would be able to attach the 'Cheat Engine' to your Game (Java Process), scan and view all the values
of the variables
in the game, they could than find the current value for the gold, and change the value of it to whatever they want.
Hope the above makes sense.