Linux 下安装JDK1.8
https://www.cnblogs.com/xuliangxing/p/7066913.html
http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
Linux 下的jdk安装
原文：https://www.cnblogs.com/chengjun/p/9278876.html
