Selective packaging for cans

Question

I have my little program.jar that uses a small part of the huge library.jar.

Is there a tool for repacking several cans into one so that it can work autonomously and as little as possible?

Update: .

Answer 1

There is proguard , with ant and maven plugins. It deletes an unused code, optionally confuses and compresses to one jar.

Proguard reduces size on two fronts

• only those classes that are actually used are stored in the last bank.
• , . , , , .

, java, . , , , . Class.forName( "xyzFoo" ), - , . , classloader , , .

pack200, .

Answer 2

JarJar - ant:

http://code.google.com/p/jarjar/

, maven, :

http://maven.apache.org/plugins/maven-shade-plugin/

Answer 3

You can try to use the Ant task jar- here you can read more information.