[MAC] JAVA 1.8 설치

1. jdk download

   http://www.oracle.com/technetwork/java/javase/downloads/index.html?ssSourceSiteId=otnjp
   

2. 환경변수 ``` $ cd /Library/Java/JavaVirtualMachines/

$ ls 1.6.0.jdk jdk1.7.0_75.jdk jdk1.8.0_74.jdk

$ vi ~/.bash_profile export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_74.jdk/Contents/Home

:wq

$ source .bash_profile ```