下载： > wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" https://download.oracle.com/otn-pub/java/jdk/8u201-b09/42970487e3af4f5aa5bca3f542482c60/jdk-8u201-linux-x64.rpm 安装： > rpm -ivh jdk-8u191-linux-x64.rpm Ubuntu安装： https://blog.csdn.net/jdliyao/article/details/80572131 > wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" https://download.oracle.com/otn-pub/java/jdk/8u201-b09/42970487e3af4f5aa5bca3f542482c60/jdk-8u201-linux-x64.tar.gz 环境变量： 打开/etc/profile  ·在profile文件末尾加入：  #JAVA CONFIG export JAVA_HOME=/usr/java/default export CLASSPATH=.:${JAVA_HOME}/lib:$CLASSPATH export PATH=${JAVA_HOME}/bin:$PATH