CentOS 7 安装JDK
(1)创建安装目录
mkdir /usr/local/java/
(2)解压至安装目录
tar -zxvf jdk-8u171-linux-x64.tar.gz -C /usr/local/java/
(3)设置环境变量
vim /etc/profile
export JAVA_HOME=/usr/local/java/jdk1.8.0_171 export JRE_HOME=${JAVA_HOME}/jre export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib export PATH=${JAVA_HOME}/bin:$PATH
(4)刷新配置
source /etc/profile
(5)查看是否安装成功
java -version