sudo add-apt-repository ppa:webupd8team/java sudo apt-get update udo apt-key adv --recv-key --keyserver keyserver.ubuntu.com xxxxxx(提示缺少的key) sudo apt-get install oracle-java8|6|7-installer sudo apt-get install oracle-java8-set-default
原文：http://www.cnblogs.com/bzhao/p/5040506.html