I want to upgrade my application from spring 3.0.5 version to Spring 4.x version, and I would like to know which one is the most stable(no bugs).. thanks for your help :)
I want to know the Major and Minor version we should use for the upgrade please?
As often with most libraries/frameworks, the best place to find this answer is the project webpage : http://projects.spring.io/spring-framework/
You will find on the right the latest versions stable and not stable (SNAPSHOT).
At the moment of writing this answer, 4.3.11
is the latest stable release of v4.X.X.
FYI, Spring 5 has been released a few days ago.
Another way to find latest dependencies, that will work for most OSS project is to look at Maven central repository