[Help] How to modify in java

[claww]

hey how i can modify inside core ?  i use dj java decompiler...

 

1. i open file  i use l2emu  i have "l2emuproject-game-1.0.0.jar"

2. i wish to modify smth inside.. example for stop ataking npc in towns i have to modify smth from true in false.. i do it and when i try compile back i get some errors about smth with unknown character..

 

i have dj java decompiler and jdk.. last version..

 

so where is the prob ? how can i modify   

 

thanks

[fdLP.]

you need your packs source , dj java dec wont do nothing

[Raule]

http://l2info.info/ here guides.

[nomz]

Would also help to show us the error you're getting.