Running a windows command line in java?

Hi guys.
I wonder if there's a way to run windows (dos) commands from within java. the code goes like:
if (setting == true) {
run dos command "ECHO Command is activated and running."
please reply if you are able to help out. thanks a lot
- n3phi|im`

note that in some cases you can use a normal
Runtime.exec ("program arg1 arg2");
but in some cases the commands are built into the shell, so you have to do
Runtime.exec ("command.com /c copy myfile here");
"copy" is one of them, and "echo" is probably one too. The latter should work for all programs and commands, but might involve some overhead as a new instance of 'command' is created and destroyed for every command.

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