1.官网下载
https://www.oracle.com/cn/java/technologies/javase/javase-jdk8-downloads.html
2.解压在 /usr/local/java/下,重命名 jdk1.8
tar -zxvf jdk-8u271-linux-x64.tar.gz
mv jdk1.8.0_271 jdk1.8
3.配置环境变量
export JAVA_HOME=/usr/local/java/jdk1.8
export PATH=$PATH:$JAVA_HOME/bin
source /etc/profile 使环境变量生效
4.查看是否安装成功
java -version
java
javac
原文:https://www.cnblogs.com/xingqiang/p/14204504.html