Example of Java calling DOS to implement scheduled shutdown

System.out.print("Please enter the number of minutes to shut down after:");
Scanner scanner = new Scanner(System.in);
int minute = scanner.nextInt()*60;
Runtime runtime = Runtime.getRuntime();
String shutdown = "shutdown -s -t "+minute;
try {
runtime.exec(shutdown);
} catch (IOException e) {
e.printStackTrace();
}
}