In Spring Core Certification Notes 4.2.md, there are my notes, which I created as a part of my preparation for the certification. Feel free to edit any inaccuracies, typos or mistakes and create a pull request for that.
Spring Core Certification.apkg is a set of flashcards exported from Anki software . This file can be imported back to Anki and then used for practicing Spring Core certification related questions/answers. Note that Anki has also mobile version (iOS , Android), which can be used for learning on the go.
To start using Anki Spring Core Certification deck
File → Import
More info about the certification process can be found in this blog post.