Some drinks are sold in fourpacks instead of sixpacks How wo

Some drinks are sold in four-packs instead of six-packs. How would you change the following program to compute the total volume for four-packs instead of six-packs?
/*
      CanVolCalc ; number, number

      program calculates and outputs, in liters:
          1. the volume of a six-pack of 12-ounce cans
          2. the volume of a six-pack of 12-ounce cans and a 2-liter bottle

      program assumes the volume of a can is 12 ounces (0.355 liter)
*/
public class CanVolCalc
{
   public static void main(String[] args)
   {
      int cansPerPack = 6;
    final double CAN_VOLUME = 0.355; // Liters in a 12-ounce can
    double totalVolume = cansPerPack * CAN_VOLUME;
      
    System.out.print(\"A six-pack of 12-ounce cans contains \");
    System.out.print(totalVolume);
      System.out.println(\" liters.\");

      final double BOTTLE_VOLUME = 2; // Two-liter bottle
      
    totalVolume = totalVolume + BOTTLE_VOLUME;
      
    System.out.print(\"A six-pack and a two-liter bottle contain \");
    System.out.print(totalVolume);
    System.out.println(\" liters.\");
   }
}

Solution

public class CanVolCalc {

   public static void main(String[] args) {
   int cansPerPack = 6;
   final double CAN_VOLUME = 0.355; // Liters in a 12-ounce can
   double totalVolume = cansPerPack * CAN_VOLUME;
   System.out.println(\"------------------------------------------\");
   System.out.println(\"**********Calculation for six-packs***********\");
   System.out.print(\"A six-pack of 12-ounce cans contains \");
   System.out.print(totalVolume);
   System.out.println(\" liters.\");

   final double BOTTLE_VOLUME = 2; // Two-liter bottle
  
   totalVolume = totalVolume + BOTTLE_VOLUME;
  
   System.out.print(\"A six-pack and a two-liter bottle contain \");
   System.out.print(totalVolume);
   System.out.println(\" liters.\");
  
   /**
   * for four pack method call
   */
   System.out.println(\"------------------------------------------\");
   System.out.println(\"**********Calculation for four-packs***********\");
   canVolCalfor4Pack(4,2);//first parameter is cans Per Pack and 2nd parameter is bottle volume in ltr
   }

   private static void canVolCalfor4Pack(int cansPerPack, double BOTTLE_VOLUME) {
       // TODO Auto-generated method stub
      
   final double CAN_VOLUME = 0.355; // Liters in a 12-ounce can
   double totalVolume = cansPerPack * CAN_VOLUME;
  
   System.out.print(\"A four-pack of 12-ounce cans contains \");
   System.out.print(totalVolume);
   System.out.println(\" liters.\");

  
   totalVolume = totalVolume + BOTTLE_VOLUME;
  
   System.out.print(\"A four-pack and a two-liter bottle contain \");
   System.out.print(totalVolume);
   System.out.println(\" liters.\");
   }

}