-
java -version //查看jdk版本
rpm -qa | grep jdk 删除带有"openjdk"字样的jdk
例: rpm -e --nodeps java-1.7.0-openjdk-1.7.0.141-2.6.10.5.el7.x86_64 -
下载该版本的jdk(jdk-8u371-linux-x64.tar.gz)
(https://www.oracle.com/java/technologies/javase/javase8u211-later-archive-downloads.html) -
解压 tar -zxvf jdk-8u371-linux-x64.tar.gz
-
配置环境变量vim /etc/profile
export JAVA_HOME=/usr/local/jdk/jdk1.8.0_371
export CLASSPATH=.:%JAVA_HOME%/lib/dt.jar:%JAVA_HOME%/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin
5. source /etc/profile //刷新profile文件
