I am trying to install GemFire but I am running into a java error which I assume is because I have multiple versions of java installed. I started with only JRE 6 but then I installed JDK 8 and finally JRE 8. GemFire needs to run with JDK 8 and JRE 8 but I am not exactly sure how to specify this. When I try to run GemFire now, I get the following error:
Java exit code 13