1、卸载自带的 OpenJDK
rpm -qa | grep java rpm -e --nodeps java-1.8.0-openjdk-1.8.0.181-7.b13.el7.x86_64 rpm -e --nodeps java-1.8.0-openjdk-headless-1.8.0.181-7.b13.el7.x86_64
2、下载jdk-8u291-linux-x64.tar.gz
方法1:
vi /etc/hosts 140.82.113.3 github.com wget https://github.com/frekele/oracle-java/releases/download/8u181-b13/jdk-8u181-linux-x64.tar.gz
3、解压
tar -zxvf jdk-8u181-linux-x64.tar.gz mv jdk1.8.0_181/ /usr/local/
4、配置环境变量
vi /etc/profile
最后加入
export JAVA_HOME=/usr/local/jdk1.8.0_181 export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar export PATH=$PATH:$JAVA_HOME/bin:$CLASSPATH
5、查看版本号
java -version