Can you recommend a Java decompiler for Eclipse? My other questions is what restrictions is there for using a decompiled code from an other Java program? Illegal or what? I dont know much about licenses. Thanks for reading.
I'd suggest the one that pops up on google, which is the JD Java decompiler. It works really nice.
As for the restrictions, you'd have to read a license of particular software, there might be written that any way of decompilation is forbidden.