java安装
1,下载JDK
jdk-14.0.1_osx-x64_bin.dmg
sudo vim /etc/profile
# JAVA
JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk-14.0.1.jdk/Contents/Home
CLASS_PATH=$JAVA_HOME/lib
PATH=.:$PATH:$JAVA_HOME/bin
# source /etc/profile
# echo $JAVA_HOME
/Library/Java/JavaVirtualMachines/jdk-14.0.1.jdk/Contents/Home
# echo $CLASS_PATH
/Library/Java/JavaVirtualMachines/jdk-14.0.1.jdk/Contents/Home/lib
参考: