Extracting java class files from jar

Question

I had running executable jar of a Java project. Unfortunately I have lost all the source code but I still got the executable jar of it. Is there any possibility to extract my classes from the jar?

I have tried extracting but class files are in damaged shape.

Answer 1

To get source from .class files , just download a decompiler from here and get them.

Answer 2

Are you talking about decompiling or just receiving the class files? The class files can be extracted using any software capable of reading ZIP. If you talk about decompiling that usually will work purly. But you could try Jad which I had the best experience with.