Well I got it done by this code
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author gunjan
*/
public class ShutDown {
public static void main(String[] args)
{
try {
Runtime.getRuntime().exec("shutdown -h 0");
} catch (IOException ex) {
Logger.getLogger(ShutDown.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
But the problem is that I need to run this code as root or superuser. Is there a way to login as root using Java and then run this code
Unsolved 
