Jar Decompiler?

General Discussions
#1

I was looking through my past projects trying to find inspiration when I found one of my old projects. Its was discontinued and I really wanted to start it up again so I looked for the source, and to my surprise I had deleted it! I would recode everything but from the state the game was in at that time I would lose some priceless polish features and the amazing framework I remember building up for it.

So If anyone knows a Java decompiler where I can select a jar and decompile all the .class files in it I would love to hear about one. I had googled it before posting and for JD-GUI it sounded promising however it didn’t launch on my mac so I looked for another and didn’t find anymore that worked.

So I’d really appreciate it if one of you guys knows of one. Thanks!

~ Jake

#2

Chances are, rebuilding an old project from scratch would increase code quality.

As for decompilers, here are some: http://stackoverflow.com/a/272550
(note: the SO question is 6 years old, check recency of answers)

#3

there is a plugin for intellij idea 13. 14 got it build in.

#4

I prefer this, JD-GUI. Also has plugins for Eclipse and IntelliJ.

http://jd.benow.ca/img/screenshot17.png

#5

Would have wondered if he had even googled if he hadn’t found that one.

#6

Sorry for my ignorance but how decompiler works? Isn’t it impossible to convert java bytecode into .class files?

#7

yes.

#8

The class files are java bytecode.

The decompiler turns it back into source code, which is possible in java because the bytecode retains quite a lot of high-level information.