1.download installation package

(macOS version end with .pkg)
download link

2.install jdk11

1. open the '.pkg' file
2. follow the installation prompts to install

3.configuring environment vaiables

• open the terminal, run the fllowing command to confirm the installation path

/usr/libexec/java_home -v 11

• edit '~/.zshrc' or '~/.bash_profile' file，add the following content

export JAVA_HOME=$(/usr/libexec/java_home -v 11)
export PATH=$JAVA_HOME/bin:$PATH

• save and exit the file, use the following command to make the configuration effective

source ~/.zshrc
or
source ~/.bash_profile

4.verify

• check 'JAVA_HOME' variable

echo $JAVA_HOME

• check java version

java -version

• check javac version

javac -version