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.

'ftp' is not recognized as an internal or external command, operable program or batch file theR Mar 11, 2002 Jump to latest Follow Reply ...

According to them, when they execute the WMIC command, instead of showing the desired result, it displays WMIC is not recognized as an internal or external command, operable program or batch file ...