Centos 7安装JDK8

安装环境 CentOS Linux release 7.9.2009 (Core)
JDK版本1.8

cd /home

 rpm -qa | grep jdk

yum -y remove java-1.7.0-openjdk*

rpm -ivh jre-8u301-linux-x64.rpm 

vim /etc/profile

export JAVA_HOME=/usr/java/default
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

source /etc/profile

java -version