Is java bytecode legally the source code of a program?

Question

Java

The use of libraries under GPLv2 requires the publication of the source code of the program. Is java bytecode the source code of a program from a legal point of view?
How to legally prove that you did not write the program in bytecodes immediately in .class files, but compiled from .java files?
The question is purely hypothetical.

Answer 1

Usually, in the absence of approved documentation describing a particular IT process, the court simply invites independent experts and asks them all the questions of interest to the court.

Answer 2

Bytecode is not source code. it already appears during compilation. On the question of "how to prove" - ​​take the source code, compile with javac of the same version, and just compare the files.

Answer 3

Hands off Open Source!
UPD: Well, libraries are usually under the LGPL. And it already allows dynamic linking without opening source codes. Check the license just in case.