How to set path to $JAVA_HOME in environment variable correctly in Mac OS (new and old - zsh and bash, both)

Run.IntelliJ.sh

# For newer Mac OS versions where zsh is the default terminal
$ nano ~/.zshenv

# For older Mac OS versions where bash is the default terminal
$ nano ~/.bash_profile

# add the following two entries in ~/.zshenv
export JAVA_HOME=$(/usr/libexec/java_home)
export PATH=/correct/path/to/apache-maven-3.8.6/bin:$PATH

# save and exit
# and then source it
# NEW
$ source ~/.zshenv
# OLD
$ source ~/.bash_profile


# now run the following to test
$ mvn -version

# Apache Maven 3.8.6 (84538c9988a25aec085021c365c560670ad80f63)
# Maven home: /correct/path/to/apache-maven-3.8.6
# Java version: 17.0.1, vendor: Oracle Corporation, runtime: /Library/Java/JavaVirtualMachines/jdk-17.0.1.jdk/Contents/Home
# Default locale: en_IN, platform encoding: US-ASCII
# OS name: "mac os x", version: "10.14.6", arch: "x86_64", family: "mac"

# run clean-install
$ mvn clean install