ShoppingCart.java

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package com.sun.cb;

import java.util.*;
import java.math.BigDecimal;
import com.sun.cb.RetailPriceList;
import com.sun.cb.RetailPriceItem;
 
public class ShoppingCart {
  ArrayList items = null;
  BigDecimal total = new BigDecimal("0.00");
  int numberOfItems = 0;
  
  public ShoppingCart(RetailPriceList rpl) {
      items = new ArrayList();
      
      for(Iterator i = rpl.getItems().iterator(); i.hasNext(); ) {
        RetailPriceItem item = (RetailPriceItem) i.next();
        ShoppingCartItem sci = new ShoppingCartItem(item, new BigDecimal("0.0"), new BigDecimal("0.00"));
        items.add(sci);
        numberOfItems++;
      }
  }
  
  public synchronized void add (ShoppingCartItem item) {
    items.add(item);
    total = total.add(item.getPrice()).setScale(2);
    numberOfItems++;
  }

  public synchronized int getNumberOfItems() {
    return numberOfItems;
  }

  public synchronized ArrayList getItems() {
      return items;
  }

  protected void finalize() throws Throwable {
      items.clear();
  }

  public synchronized BigDecimal getTotal() {
    return total;
  }


  public synchronized void clear() {
      numberOfItems = 0;
      total = new BigDecimal("0.00");
      items.clear();
  }
}