package apusic.myshop.cart.model;import java.io.Serializable;/** * This class represents an individual line item * of the shopping cart. */public class CartItem implements Serializable {  private String itemId;  private String catalogId;  private String name;  private String style;  private int quantity;  private double unitCost;  public CartItem(String itemId, String catalogId, String name,		    String style, int quantity, double unitCost) {    this.itemId = itemId;    this.catalogId = catalogId;    this.name = name;    this.style = style;    this.quantity = quantity;    this.unitCost = unitCost;  }  public String getItemId() {    return itemId;  }  public String getCatalogId() {    return catalogId;  }  public String getName() {    return name;  }  public String getStyle() {    return style;  }  public int getQuantity() {    return quantity;  }  public double getUnitCost() {    return unitCost;  }  public double getTotalCost() {    return quantity * unitCost;  }}