we have a problem at work right now. We have a jar file without corresponding source code from a software. We only have older versions of the code. But we need to make changes to the current source code. So I tried to decompile the jar file with "jd-gui.exe". But while compiling the decompiled file errors occur. We currently have no Java programmers in the company. And I hardly know anything about Java. Do I have to pay attention to something when decompiling and recompiling or are there other ways to get the code.
Thanks in advance