// TEST CODES FOR USING COLLECTION FROM OTHER CLASS

/* This sample code shows how a collecion object and methods
from other class can be used in another class. */

/* A collection object used for merchandise inventory is very similar
in structure to the orders collection. Rather than creating a new
collection for orders, the merchandise collection and its methods
are used to create and display an orders collection. */

/* To test the code, compile this file using the command javac 
Order.java. To display the merchandise inventory, enter the 
command java Toys and press the enter key. To display the 
orders collection, enter the command java Order. */

// Define the basic unit of collection with its methods

class Toy
{
   String toyName;
   int toyQuantity;
   float toyPrice;
   float toyCost;

   // Use method to make initialization easier

   public void setToyDetails (String n, int q, float p)
   {
      toyName = n;
      toyQuantity = q;
      toyPrice = p;
   }

   public float computeToyCost() // Compute 1 collection unit cost
   {
      toyCost = toyPrice * toyQuantity;
      return toyCost;
   }

   public void displayToyDetails() // To display 1 collection unit
   {
      System.out.println("\nToy Name: " + toyName);
      System.out.println("Toy Quantity: " + toyQuantity);
      System.out.println("Toy Price: " + toyPrice);
      System.out.println("Toy Cost: " + toyCost);
   }
}

// Define the collection class

class Toys
{
   float toyAmount;
   float totalAmount = 0f;
   Toy [] toyList;

   // Use custom constructor to create array of variable size

   public Toys(int toyListSize)
   {
      toyList = new Toy[toyListSize];
      for (int i = 0; i < toyListSize; i++)
      {
         toyList[i] = new Toy();
      }
   }

   public void displayToyList() // Method to display collection

   {
      for (int i = 0; i < toyList.length; i++)
         {
            toyAmount = toyList[i].computeToyCost();
            toyList[i].displayToyDetails();
         }
   }

   public void computeTotalAmount() // Method to compute total
   {
      for (int i = 0; i < toyList.length; i++)
      {
         toyAmount = toyList[i].computeToyCost();
         totalAmount = totalAmount + toyAmount;
      }
   }

   public void displayTotalAmount() // Display collection total
   {
      computeTotalAmount();
      System.out.println("\nTotal Cost: " + totalAmount);
   }

   // Collection main instantiates and displays collection    

   public static void main (String args[])
   {
      Toys ourToys = new Toys(6);

      ourToys.toyList[0].setToyDetails("Doll", 20, 10f);
      ourToys.toyList[1].setToyDetails("Ball", 30, 20f);
      ourToys.toyList[2].setToyDetails("Car", 10, 30f);
      ourToys.toyList[3].setToyDetails("Book", 20, 20f);
      ourToys.toyList[4].setToyDetails("Bag", 20, 30f);
      ourToys.toyList[5].setToyDetails("Radio", 30, 10f);

      System.out.println("\nThe Toys Inventory");
      ourToys.displayToyList();
      ourToys.displayTotalAmount();
   }
}

// Define another class that will use above collection

public class Order
{
   Toys orders; // Object to hold toy collection in Order class

   public Order(int orderSize)  // Constructor specifies size
   {
      orders = new Toys(orderSize);
   }

   public static void main (String args[]) // Main for this class
   { 
      Order myOrder = new Order(3); // Instantiate order object
      
      myOrder.orders.toyList[0].setToyDetails("Ball", 3, 20f);
      myOrder.orders.toyList[1].setToyDetails("Book", 3, 20f);
      myOrder.orders.toyList[2].setToyDetails("Bag", 3, 30f); 

      // Use toy collection methods to display Order collection

      System.out.println("\nThe Orders");
      myOrder.orders.displayToyList();
      myOrder.orders.displayTotalAmount();
   }
}