To check which version of Java you have on your Windows computer, you'll need to open the Command Prompt app. If you don't have the latest version of Java installed, Windows may have trouble ...

Check if Java is installed on your computer Install Java ... One of the reasons why a command is not recognized as an internal or external command is that it’s not one of the environment variables.

you need to check the version. In other words, you need to know whether Java is already installed on your PC or not. For that, open Command Prompt with administrator permission and enter this ...

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 ...