Any ideas on how to execute a DOS prompt command

I am trying to do the following and need help :
Step#1 :
Accepting fields on a screen (which I know how to do)
Step#2 :
After editing, when the user presses the Submit button, I want to trigger a command to run in the Dos environment at a command line, then return ??
Can this be done using Java ?
Thank you.

Process is a class in the java.lang.Process package.
The windows is just a variable that I have to check what is the Operating System running my Java Application.
You need to look at the API for the Runtime class.
This class has a method for excecuting commands.

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