Dynamically manage two jar files with the same package and class names

Question

I have two jar files from a client, one of which is used for a testing and another for final versions. Currently I put them in different folders and modify the library path when deploying our code, but it would be nice to be able to load both jar files and switch between them dynamically at runtime.

Is this possible?

Answer 1

Using OSGi bundles you can do that. Take a look at http://blog.springsource.com/2008/02/18/creating-osgi-bundles/. Search for "multiple versions".