查詢版本
yum search java|grep jdk
image.png
安裝
···
yum install java-1.8.0-openjdk
···
安裝Java1.8
按兩次Y確認(rèn)
cd /usr/lib/jvm
image.png
配置環(huán)境變量
usr/lib/jvm/java-1.8.0-openjdk-1.8.0.292.b10-1.el7_9.x86_64
vim /etc/profile
export JAVA_HOME=usr/lib/jvm/java-1.8.0-openjdk-1.8.0.292.b10-1.el7_9.x86_64
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH
測(cè)試
java -version
