Download the JDK

www.oracle.com/java/techno… Select the version you want to download. Remember to select the JDK version, not the JRE, otherwise the path will not be installed there when you set JAVA_HOME

Because of Android development, I chose to download JDK8. evernotecid://11C9A2F2-0F47-45EA-AD4B-A100BBE1C07A/appyinxiangcom/2742929/ENResource/p6094

Install the JDK

Double-click the downloaded.dmg file and install it as prompted.

Set the JAVA_HOME

Once installed, the JDK installation path is in: / Library/Java/JavaVirtualMachines / {} JDK version/Contents/Home.

By the way the JRE installation path is: / Library/Internet plug-ins/JavaAppletPlugin plugin/Contents/Home /

Set the ~ /. Following

  1. If the./bash_profile file exists, execute$open -e ~/.bash_profileThen fill in the following code. If no, run the command first$touch ~/.bash_profileFill in the following code again.
JAVA_HOME = / Library/Java/JavaVirtualMachines jdk1.8.0 _281. JDK/Contents/Home PATH =$JAVA_HOME/bin:$PATH:.
CLASSPATH=$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:.
export JAVA_HOME
export PATH
export CLASSPATH
Copy the code
  1. perform$source ~/.bash_profileTo take effect

How to set the MAC to ZSH. Bash_profile

The above.bash_profile may not work after reboot because ZSH is used instead of bash under MAC (MAC version 10.15.7) and ZSH loads ~/.zshrc files, and the ‘.zshrc ‘file does not define task environment variables.

Solutions:

At the end of the ~/.zshrc file, add the line source ~/.bash_profile