Calling the system commands in Java

Hi All,
How to call the system commands in java other than using
exec() function.For eg, in my linux machine i have used p.exec("exit") to exit from a cshell to the prompt but it is not working.Is there any other solution for this one. Pls. do provide a solution for this.It is quite Urgent.
Thanks,
m.ananthu

Why not SEARCH THE F*ING FORUMS!! This has been answered SO MANY TIMES

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===============
import java.util.*;
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Calling the system commands in Java

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