1.jdk-8u162-linux-x64.tar.gz
Ubuntu 14.04安裝JDK1.8.0_25與配置環境變量
https://www.linuxidc.com/Linux/2015-01/112030.htm
Ubuntu 下jdk的環境變量配置（解決了重啟電腦后失效的問題！）
https://blog.csdn.net/eastlhu/article/details/9313069
2.rpm
rpm -ivh jdk-8u45-linux-x64.rpm 進行安裝
Ubuntu無法安裝rpm包，ubuntu RPM should not be used directly install RPM packages, use Alien instead!
https://blog.csdn.net/suleil1/article/details/49471723