安装python-software-properties
$sudo apt-get install python-software-properties $sudo apt-get install software-properties-common
首先添加ppa
$ sudo add-apt-repository ppa:webupd8team/java
然后更新系统
$ sudo apt-get update
最后开始安装
$ sudo apt-get install oracle-java8-installer $ java -version java version "1.8.0_05" Java(TM) SE Runtime Environment (build 1.8.0_05-b13) Java HotSpot(TM) Server VM (build 25.5-b02, mixed mode)
java版本切换
sudo update-java-alternatives -s java-8-oracle