Welcome to the Ranch
T Voort wrote:. . . "is not recognized as internal or external command, operable program..."
Good point If that program is causing problems you should uninstall it.
Ryan Gabriel wrote:May be you in installed codeblocks willingly or unwillingly, you can uninstall it like any other program from your computer.
As you are learning java, codeblocks could be a bit hard for you.
I have seen better tutorials that that. Look at our FAQ which I gave a link to yesterday, or here. Avoid using NetBeans Eclipse IntelliJ and other IDEs at this stage. There is a risk that they will simply confuse you.
You should go for IntelliJ IDEA or Eclipse But practicing in command is the best option for beginners.
this is a good reference to teach you about command.