Volume.java

import java.util.Scanner;

/**
   This program prints the price per liter for a six-pack of cans and
   a two-liter bottle.
*/
public class Volume
{
   public static void main(String[] args)
   {
      // Read price per pack

      Scanner in = new Scanner(System.in);

      System.out.print("Please enter the price for a six-pack: ");
      double packPrice = in.nextDouble();

      // Read price per bottle

      System.out.print("Please enter the price for a two-liter bottle: ");
      double bottlePrice = in.nextDouble();

      final double CANS_PER_PACK = 6;
      final double CAN_VOLUME = 0.355; // 12 oz. = 0.355 l 
      final double BOTTLE_VOLUME = 2;

      // Compute and print price per liter

      double packPricePerLiter = packPrice / (CANS_PER_PACK * CAN_VOLUME);
      double bottlePricePerLiter = bottlePrice / BOTTLE_VOLUME;

      System.out.printf("Pack price per liter:   %8.2f", packPricePerLiter);
      System.out.println();
      
      System.out.printf("Bottle price per liter: %8.2f", bottlePricePerLiter);
      System.out.println();
   }
}