Linux配置Oracle JAVA环境

1.下载java jdk的安装包
#pwd
/usr/local/src
2.解压二进制文件并设置软连接
# tar -xvf jdk-8u241-linux-x64.tar.gz
# ln -sv /usr/local/src/jdk1.8.0_241 /usr/local/jdk
3.配置环境变量
# vim /etc/profile
export JAVA_HOME=/usr/local/jdk
export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH
export CLASSPATH=.$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib:$JAVA_HOME/lib/tools.jar
4.重新导入环境配置
# source  /etc/profile
5.验证java 版本
# java -version
java version "1.8.0_241"
Java(TM) SE Runtime Environment (build 1.8.0_241-b07)
Java HotSpot(TM) 64-Bit Server VM (build 25.241-b07, mixed mode)