CODEWITHSUNDEEP
javamaven
Shabin Hashim
Shabin Hashim

Reputation: 707

Maven Adding dependency for specific java package

I have two version of the same jar file. (version 1 and 2). My problem is that i want classes in a specific package to use one version and classes in another package to use the other version.Both the packages are under the same maven project.

Tried to add both the jar files as dependencies in the POM, but the second entry overrides the first one and only one version is added as dependency.

Is there a way to achieve this in Maven.?

Upvotes: 0

Views: 1094

Answers (2)

Duncan Jones
Duncan Jones

Reputation: 69409

Token ugly solution...

Split your project into two modules, where each module uses a different version of the dependency. To avoid the class-loader problems referenced in jwenting's excellent answer, use the Maven Shade Plugin to rename the dependency packages in one of the modules.

See Relocating Classes for an example of doing this.

Upvotes: 0

jwenting
jwenting

Reputation: 5663

Think about DLL Hell. The only way you can get various versions of the same class to coexist in a single JVM is to load each using a different class loader, and you don't want to go that way.

Rewrite your code so all of it works with the newest version of the library, or rewrite it so it doesn't need whatever changes in the library require you to use v2, your choice.

Upvotes: 1

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