用JAVA编写的超市购物管理系统

//Source file: D:\\com\\yema\\pom\\domain\\Order.java package com.yema.pom.domain; import java.util.Date; import java.util.TreeSet; public class Order implements java.io.Serializable { private static final long serialVersionUID = 2756054405310038433L; private Integer poNo; private Date orderDate; private Date shipDate; private String toStreet; private String toCity; private String toState; private String toZip; private Double total; public Customer customer; private java.util.Set<LineItem> lineItems = null; public Order() { } public boolean addLineItem(LineItem lineItem) { if (lineItems == null) { lineItems = new TreeSet<LineItem>(); } lineItem.setOrder(this); lineItem.setLineNo(lineItems.size() + 1); return lineItems.add(lineItem); } @Override public String toString(){ return "(" + customer.getCustNo() + ", " + poNo + ", " + orderDate + ", " + shipDate + ", " + toStreet + ", " + toCity + ", " + toState + ", " + toZip + ")"; } @Override public boolean equals(Object obj) { if (obj == null) return false; Order other = (Order) obj; if (this.getPoNo().equals(other.getPoNo())) { return true; } else { return false; } } @Override public int hashCode() { return poNo; } public Integer getPoNo() { return poNo; } public void setPoNo(Integer poNo) { this.poNo = poNo; } public Date getShipDate() { return shipDate; } public void setShipDate(Date shipDate) { this.shipDate = shipDate; } public String getToStreet() { return toStreet; } public void setToStreet(String toStreet) { this.toStreet = toStreet; } public String getToCity() { return toCity; } public void setToCity(String toCity) { this.toCity = toCity; } public String getToState() { return toState; } public void setToState(String toState) { this.toState = toState; } public String getToZip() { return toZip; } public void setToZip(String toZip) { this.toZip = toZip; } public Double getTotal() { total = 0.0; System.out.println("^^^^^^^^^^^^^^^^^^^" + lineItems); for(LineItem item : lineItems){ System.out.println("****************" + item); System.out.println("****************" + item.getStockItem()); total = total + (item.getquantity() * item.getStockItem().getPrice())*(1 - item.getDiscount()); } return total; } public void setTotal(Double total) { this.total = total; } public Customer getCustomer() { return customer; } public void setCustomer(Customer customer) { this.customer = customer; } public java.util.Set<LineItem> getLineItems() { return lineItems; } public void setLineItems(java.util.Set<LineItem> lineItems) { this.lineItems = lineItems; } public Date getOrderDate() { return orderDate; } public void setOrderDate(Date orderDate) { this.orderDate = orderDate; } }