linux下jdk安装

打开配置文件

vim /etc/profile

末尾加入jdk路径

export JAVA_HOME=/home/java/jdk1.8.0_211
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$JAVA_HOME/bin:$PATH

使环境变量生效

source /etc/profile

查看jdk版本

java -version

错误提示，添加对应文件夹权限

-bash: /home/java/jdk1.8.0_211/bin/java: Permission denied

chmod 777 /home/java/jdk1.8.0_211/bin/java