import java.util.Scanner;

public class Application {
    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);


        System.out.println("Please enter a command: ");
        String text = input.nextLine();

        switch(text) {
        case "start":
            System.out.println("Machine started!");
            break;

        case "stop":
            System.out.println("Machine Stopped.");
            break;

            default:
                System.out.println("command not recognised");
        }
    }
}