Here is the post that I found that basically told me how to do it
https://msfn.org/board/topic/171337-running-java-apps-with-java-7-and-java-8/
scroll all the way down until you see the KernelEx Auxiliary DLL Updates link and read what he says to do
I have figured it out, but I can't figure out how to make it the default system java.
Edit: I know I'm pretty late on this but I'll tell you how to do it.