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.

How do you run a JAR at the command line? As long as you have Java installed, and the PATH variable points to the \bin directory of the JDK, you issue the following command to run a JAR file at the ...

Learn how to use the Command pattern to encapsulate requests as objects that you can execute alone or in sequence in your Java programs.

Disabling Java in OS X requires doing so for each user account; however, even terminal commands for doing this may be a bit impractical to use as a substitute.