java jdk

Oracle官网上下载jdk1.8

https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html

linux全局配置：

find / -name java
cd /usr
cd java

cd jdk1.8.0_333-amd64/
pwd //得到路径
/usr/java/jdk1.8.0_333-amd64

vi /etc/profile //编辑
export JAVA_HOME=/usr/java/jdk1.8.0_333-amd64
export PATH=$JAVA_HOME/bin:$PATH //保存
source /etc/profile //从新加载下配置
echo $PATH