How to invoke dos shell from java program

Hi,
I'm not able to invoke dos shell from java.
Can any one help me in this issue.
I'm providing the source code below:
try{
Runtime.getRuntime().exec("cmd.exe")
catch(IOException e) {
System.out.println(e.getStackTrace());
Thanks

Does it throw a different exception?
Or does it just do nothing at all?
It does nothing at all[/b
Is this a standalone Java app?
Or a Java Applet running via a webbrowser? [b]It's a standalone application

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