Java Virtual Machine

java.exe -classpath . HelloWorld

Leo

Also, extended examples

To run a HelloWorld.class app, in the default package in a jar in C:\MyDir, use
java.exe -jar HelloWorld.jar HelloWorld

To run a HelloWorld.class app in C:\com\mindprod\mypackage, in package com.mindprod.mypackage, use
java.exe -classpath . com.mindprod.mypackage.HelloWorld

This will not work to run a HelloWorld.class app in C:\com\mindprod\mypackage, in package com.mindprod.mypackage:
C:\com\mindprod\mypackage
java.exe -classpath . com.mindprod.mypackage.HelloWorld
For that to work, you must use smartj instead of java.exe.

To run a HelloWorld.class app in C:\com\mindprod\mypackage, in a jar in package com.mindprod.mypackage, use
CD \AnyDir
java.exe -jar HelloWorld.jar com.mindprod.mypackage.HelloWorld

If for any reason the examples shown do not work with your version of java.exe, try various combinations of
com.mindprod.mypackage.HelloWorld, com/mindprod/mypackage/HelloWorld and com\mindprod\mypackage\HelloWorld.

Cheers,

Leo

You need to either explicitly specify the path of the java.exe that you wish to use, or alter the system's PATH variable..