I dont believe you need the Development kit, but I've always downloaded it just to be safe (it includes normal java in it) and its worked fine   How to change it: It could be complicated, you should be able to change it with commands but that didn't work for me (MacBook Pro 2013) so I deleted java completely then installed the right java Java 8u151: http://www.oracle.com/technetwork/java/javase/downloads/java-archive-javase8-2177648.html   MAKE SURE you downlo