Byte code to Java source code

bytecode, java

Solution

It is possible. You need a Java Decompiler to do this.

You'll find mostly it'll do a surprisingly good job. What you'll get is a valid `.java` file which will compile to the `.class` file but this `.java` file won't necessarily be the same as the original source code. Things like looping constructs might come out differently, and anything that's compile time only such as generics and annotations won't be re-created.

You might have a problem if the code has been obfuscated. This is a process which alters the class files to make them hard to decompile. For example, class and variable names are changed to all be similar so you'll end up with code like `aa.a(ab)` instead of `employee.setName(name)` and it's very hard to work out what's going on.

I remember using JAD to do this but I don't think this is actively maintained so it may not work with never versions of Java. A Google search for java decompiler will give you plenty of options.

Problem

Original source