安装jdk
[root@i-r56lkwq0 ~]# yum install -y java-11-openjdk* [root@i-r56lkwq0 ~]# vim /etc/profile export JAVA_HOME=/usr/lib/jvm/jre-11-openjdk export PATH=$JAVA_HOME/bin:$PATH export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar [root@i-r56lkwq0 ~]# source /etc/profile
验证jdk
[root@i-r56lkwq0 ~]# java -version openjdk version "11.0.14.1" 2022-02-08 LTS OpenJDK Runtime Environment 18.9 (build 11.0.14.1+1-LTS) OpenJDK 64-Bit Server VM 18.9 (build 11.0.14.1+1-LTS, mixed mode, sharing)
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