ubuntu 命令行安装Oracle Jdk

1. Installing Oracle JDK

   sudo apt-get install python-software-properties
   sudo add-apt-repository ppa:webupd8team/java
   sudo apt-get update

   Oracle JDK 6(旧版本)
   sudo apt-get install oracle-java6-installer
   Oracle JDK 7(较新的稳定版本)
   sudo apt-get install oracle-java7-installer
   Oracle JDK 8(最新预览版本)
   sudo apt-get install oracle-java8-installer

2. 出处  ： http://segmentfault.com/blog/doyle/1190000001703180