i have a jar fie, with many class files inside from which i need to modify only 2 of them. I just need to modify a single line of code in each case. I have a program called Java Decompliler that shows me all the contents and structure of the files inside of the jar file as well as the contents of the classes but it wont allow me to edit them. I have another one called DJ Java Decompiler 3.12 which extracts all the class files inside to a folder kinda winrar. Then seems it allows me to edit each file individually but seems like the files are not decompiled properly, since i found some errors in the code. Anyway, i would like to know if there is a program more straightforward that allows me to exactly just what i need to: change the lines inside those 2 class files, save and use.

Thank you.