原文 http://www.webupd8.org/2014/03/how-to-install-oracle-java-8-in-debian.html
首先按照顺序执行下面命令
sudo su echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee /etc/apt/sources.list.d/webupd8team-java.list echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee -a /etc/apt/sources.list.d/webupd8team-java.list apt-key adv --keyserver keyserver.ubuntu.com --recv-keys EEA14886 apt-get update apt-get install oracle-java8-installer exit
之后在控制台中输入 java -version来查看安装的版本是否正确