Spring Jar's Issue:

Spring jar’s have different version according to their release type, If you mix different versions of jar you may get injection or version exceptions which are tough to figure out.

The different release types are:

• M - Milestone Release, e.g. M1, M2
• RC - Release Candidate, e.g. RC1, RC2
• RELEASE - Final release

So collect the jar’s of the same release to save your time from exceptions.