Mac configuration JAVA_HOME environment variable

configure bash_profile

• Execute the following command in the Mac terminal to see the Java installation directory

/usr/libexec/java_home

# 输出：
/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home

• Execute the command vim ./bash_profile Enter bash_profile editing and add the following configuration at the end:

export JAVA_HOME=$(/usr/libexec/java_home)
export PATH=$JAVA_HOME/bin:$PATH
export CLASS_PATH=$JAVA_HOME/lib

• Then execute the command source ~/.bash_profile to make the configuration take effect.
• Finally execute echo $JAVA_HOME to verify whether the configuration takes effect:

echo $JAVA_HOME

# 如果能正确输出Java安装目录，则说明配置已生效
/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home

Configure JAVA_HOME when oh_my_zsh is installed

If oh_my_zsh has been installed on Mac, then executing source ~/.bash_profile will change the terminal style back to the previous bash style. In this case, to configure JAVA_HOME, the previous steps are still the same. The only thing that needs to be modified is to add source ~/.bash_profile to the ~/.zshrc file. The operation is as follows:

• Execute command vim ~/.zshrc Enter ~/.zshrc file editing
• Insert source ~/.bash_profile into the file, it is recommended to add this line before source $ZSH/oh-my-zsh.sh
• Execute the command source ~/.zshrc to make the configuration take effect
• Finally, you can also execute echo $JAVA_HOME to verify whether the configuration is effective