or StringConcatFactory vs concatenation in java9+. or just go to github to get master - ( release cadence).įeel free to drop me a line if there's anything you think is particularly broken, bear in mind it's a work in progress (but I'd say on a par with others!) - Or if you want to know when an update is out, I've finally started announcing on twitter - ( about syntactic sugar in compilation.Īll of this stuff is documented (links where I find them) these are things I found particularly interesting while messing around with this. (Feb 2021) (I suggest using latest, but if you spot a regression, it means I'm missing a test.

To use, simply run the specific version jar, with the class name(s) you want to decompile (either as a path to a class file, or as a fully qualified classname on your classpath).Īlternately, to decompile an entire jar, simply provide the jar path, and if you want to emit files (which you probably do!) add -outputdir /tmp/putithere ( FAQ) - It'll even make a decent go of turning class files from other JVM languages back into java! :ĬFR will decompile modern Java features - up to and including much of Java 9, 12 & 14, but is written entirely in Java 6, so will work anywhere!

Google java compiler online