Mac系统安装jdk

登陆官网使用Oracle账号下载

• 下载地址 https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html
• 选择Mac版本下载

• 直接点开安装即可

• 验证Java环境

reboot@bogon ~ % java -version
java version "1.8.0_281"
Java(TM) SE Runtime Environment (build 1.8.0_281-b09)
Java HotSpot(TM) 64-Bit Server VM (build 25.281-b09, mixed mode)

配置环境变量

•  Mac默认路径为/Library/Java/JavaVirtualMachines/

reboot@bogon ~ % cd /Library/Java/JavaVirtualMachines/
reboot@bogon JavaVirtualMachines % ls
jdk1.8.0_281.jdk

• 配置环境变量

reboot@bogon JavaVirtualMachines % sudo vi /etc/.bash_profile

JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_281.jdk/Contents/Home/
CLASSPAHT=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
PATH=$JAVA_HOME/bin:$PATH:
export JAVA_HOME
export CLASSPATH
export PATH

• 使其生效

reboot@bogon JavaVirtualMachines % source /etc/.bash_profile
reboot@bogon JavaVirtualMachines % java -version
java version "1.8.0_281"
Java(TM) SE Runtime Environment (build 1.8.0_281-b09)
Java HotSpot(TM) 64-Bit Server VM (build 25.281-b09, mixed mode)