I want to convert a .exe file into a java .class file or ultimately into the .jar file is this possible? How?

Answer 1

Not really possible in the general case.

Java doesn't "do" .exe files. The ultimate form of a compiled Java program is a .class or a .jar (which is itself an archive of .class files). What this means is: if you have an .exe, it must have been created from some other language. (So, then, the problem is not a matter of turning something "back" into the original Java, but rather transforming something completely different into Java.)

You could possibly use a decompiler for whatever the original language is, and then write a translator to translate most of that language to Java. But there is no guarantee that would work in general, and it assumes both (a) the existence of a working decompiler for the original language, and (b) that the original language can be mapped sensibly to Java.

You could use a disassembler and translate the assembly code into Java. That would work, but be a colossal pain in the neck for any reasonably complex instruction set -- and, again, no guarantee that there's an equivalent Java function for every machine instruction in the .exe file.

Answer 2

You generally cannot "decompile" a binary executable into source code.

Answer 3

uhmmmm, you may have to recompile

Answer 4

not possible