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Java Local Development Environments Exploring Your IDE Creating Your First Project

I have two different JDKs on my Windows machine. Can I delete the older one, and move one?

Quite a while back, I had installed the Oracale's JDK with Netbeans just to have on my computer way before I ever found out about Treehouse. So, following along I just went along with Craig Dennis to download the latest version of the JDK.

Now, when I am setting up the "Project SDK" in IntelliJ, I have the proper folder open and it is showing me two different JDKs. (Actually, it is showing me two of each. Here is what I see:





Can I delete the older version of the JDK and just run along with the current version the "_121"? Also, can I delete the extra "_121" and everything be okay?