it can be done, but it will take at least a day or two of mad scientist level "must java, eat later, SLEEP LATER, COFFEE!!!!" if you want to get it to work as i imagine you do
searching the forums for answers to specific questions and borrowing ideas for how to do "X" from other mods also helps
(i play SOME mods mostly so i can pull their code and disect it for !!SCIENCE!!)
also get an IDE, i sudgest
IDEA just cause its java newbie friendly
once that is done, all thats left is to code what you want, pull a leaver and scream: