yum安装jdk
[root@iZ2zeflzb6atg5mhyyxn7oZ ~]# yum -y install java-1.8.0-openjdk*
配置变量
[root@iZ2zeflzb6atg5mhyyxn7oZ ~]# vim /etc/profile export JAVA_HOME=/usr/lib/jvm/jre-1.8.0-openjdk export PATH=$JAVA_HOME/bin:$PATH export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
使其生效
[root@iZ2zeflzb6atg5mhyyxn7oZ ~]# source /etc/profile [root@iZ2zeflzb6atg5mhyyxn7oZ ~]# java -version openjdk version "1.8.0_242" OpenJDK Runtime Environment (build 1.8.0_242-b08) OpenJDK 64-Bit Server VM (build 25.242-b08, mixed mode)
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