Building JAR-files using only needed class-files

It is (alomost) impossible.

Because:

import com.bar.*;

does not really include anything - it just means that classname X can be
used at short version for com.bar.X in the source code

But you can still specify com.other.Y without any import in the code.

So you will need to either:
  - analyze the class file with reflection and really see what
    classes are being used
  - analyze the source file as a compiler does and really see what
    classes are being used

Neither are trivial to do.

I am not aware of any tool dedicated to do this.

But most obfuscators can actually do this: remove unused code.

Try look at f.ex. ProGuard.

dont know other ways than to find and put them together manually and then make a .jar file with the jar-maker-thingy...

Thats what I've done

It seems that ProGuard is almost what we are looking for. I meant that I was looking for a tool to remove unused code, and since ProGuard also comes with a plugin for ANT, it's seems perfect.

Thanks

arne_v >> smider du et svar?

kommer her