Java Program to Shut Down Computer in Linux

// Java Program to Shut Down Computer
// when Operating System is Linux.

import java.io.IOException;
import java.util.Scanner;

public class SystemShutDown {

    public static void main(String args[])
        throws IOException
    {
        // Initialized to  take input from user in seconds
        int seconds;

        // Find Out Operating System
        String operatingSystem
            = System.getProperty("os.name");

        // Print Operating System of Computer
        System.out.println("Name of Operating System:"
                           + operatingSystem);

        // Check if Computer Operating System is Linux or
        // not
        if (operatingSystem.equals("Linux")) {
          
            // Returns the runtime object associated with
            // the current Java application.
            Runtime runTime = Runtime.getRuntime();

            // Take input from user in seconds
            seconds = 5;

            // Retrieve current Runtime Environment
            Process processing
                = runTime.exec("shutdown -h -t " + seconds);

            // Shutting Down the System
            System.exit(0);
        }