import java.util.Scanner;

public class ExceptionDemo
{
    public static void main(String[] args)
    {
        Scanner keyboard = new Scanner(System.in);

        try
        {
            System.out.println("Enter number of donuts:");
            int donutCount = keyboard.nextInt( );
            System.out.println("Enter number of glasses of milk:");
            int milkCount = keyboard.nextInt( );
            if (milkCount < 1)
               throw new Exception("Exception: No milk!");
            double donutsPerGlass = donutCount / (double)milkCount;
            System.out.println(donutCount + " donuts.");
            System.out.println(milkCount + " glasses of milk.");
            System.out.println("You have " + donutsPerGlass +
							   " donuts for each glass of milk.");
        }
        catch(Exception e)
        {
            System.out.println(e.getMessage());
            System.out.println("Go buy some milk.");
        }
        System.out.println("End of program.");
    }
}