Home/ Questions/Q 8566759
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-11T17:43:45+00:00

I’m a student with quite some experience in Java but totally new to Maven.

  • 0

I’m a student with quite some experience in Java but totally new to Maven.

I was trying to implement a RESTful service provider and client with jersey-server and jersey-client. Both also depends on jersey-json, to make use of automatic conversion between POJO and JSON. Both of them also depend on a service model I implemented myself, where the POJO definition resides.

However, the code doesn’t work for me. I spent quite a few hours looking for solutions everywhere on the Internet. It turns out the reason of the failure is that I accidentally specified version of jersey-server and jersey-client as 1.14, but jersey-json as 1.9.1.

The server doesn’t work at the beginning, but at some point suddenly starts working. (I have no idea how this happened.) The client never worked until I change jersey-json version to 1.14.

Why do I need to have the same version for these different dependencies?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Because one depends on the other or otherwise has a compatibility issue. This is what dependency management is all about. Run mvn dependency:tree to see exactly how these libraries relate to each other.

    In this case, it seems Jersey libraries are all released together as a “bundle” – and you need to use the versions from those bundles together. See: http://jersey.java.net/nonav/documentation/latest/chapter_deps.html

    Note that this is an attribute of the Jersey libraries, not Maven.

    • 0