mac安装JDK1.8

一、

http://www.oracle.com/technetwork/java/javase/downloads/index.html

去jdk官网下载

二、安装

一路傻瓜式安装，下一步下一步

三、配置环境

vim ~/.bash_profile 

配置环境

JAVA_HOME=/usr/bin/java

PATH=$JAVA_HOME/bin:$PATH

CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

export JAVA_HOME  PATH CLASSPATH 

使用：wq 回车退出

source .bash_profile

nicknailodeMacBook-Pro:~ nicknailo$ java -version

java version "1.8.0_161"

Java(TM) SE Runtime Environment (build 1.8.0_161-b12)

Java HotSpot(TM) 64-Bit Server VM (build 25.161-b12, mixed mode)

nicknailodeMacBook-Pro:~ nicknailo$ java -version

java version "1.8.0_161"

Java(TM) SE Runtime Environment (build 1.8.0_161-b12)

Java HotSpot(TM) 64-Bit Server VM (build 25.161-b12, mixed mode)

查看 安装path    

echo $PATH