Source of Bundle.java

Structures and functions

public class Bundle implements LineItem

  1: import java.util.*;

  3: /**
  4:    A bundle of line items that is again a line item.
  5: */
  6: public class Bundle implements LineItem
  7: {
  8:    /**
  9:       Constructs a bundle with no items.
 10:    */
 11:    public Bundle() { items = new ArrayList<LineItem>(); }

 13:    /**
 14:       Adds an item to the bundle.
 15:       @param item the item to add
 16:    */
 17:    public void add(LineItem item) { items.add(item); }

 19:    public double getPrice()
 20:    {
 21:       double price = 0;

 23:       for (LineItem item : items)
 24:          price += item.getPrice();
 25:       return price;
 26:    }

 28:    public String toString()
 29:    {
 30:       String description = "Bundle: ";
 31:       for (int i = 0; i < items.size(); i++)
 32:       {
 33:          if (i > 0) description += ", ";
 34:          description += items.get(i).toString();
 35:       }
 36:       return description;
 37:    }

 39:    private ArrayList<LineItem> items;
 40: }