How to set PHPStorm Custom Java Path
Download Oracle Java SDK:
http://www.oracle.com/technetwork/articles/javase/index-jsp-138363.html
Extract anywhere you want.In my case i extract /home/xuma/Application/jdk1.8.0_25
Open PHPStorm/bin/phpstrom.sh
Add this line under "Locate a JDK.." comment
JAVA_HOME='/home/xuma/Application/jdk1.8.0_25'