If Java is not recognized as internal or external command, you need to make sure that the installation is not problematic and its path is recognized as system variables.

Here are the three easiest ways to fix Java’s “not recognized as an internal or external command” error: Install or reinstall Java and the JDK on your computer Add Java’s bin directory to the computer ...

This command will show the installed version of Node.js if the PATH is set correctly. How to Fix the 'npm' is not recognized as an internal or external command Error ...