yum安装openjdk

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)