public class Order { private int orderNumber; private String serviceType; private double price; private String status; public Order(int orderNumber, String serviceType, double price, String status) { this.orderNumber = orderNumber; this.serviceType = serviceType; this.price = price; this.status = status; } public int getOrderNumber() { return orderNumber; } public String getServiceType() { return serviceType; } public double getPrice() { return price; } public String getStatus() { return status; } @Override public String toString() { return "Order{" + "orderNumber=" + orderNumber + ", serviceType='" + serviceType + '\'' + ", price=" + price + ", status='" + status + '\'' + '}'; } public static void main(String[] args) { Order order = new Order(1, "Service A", 100.0, "New"); System.out.println(order); } }怎么接着完成这个系统

要完成这个系统，您需要确定系统的功能和需求。一般而言，一个订单管理系统需要以下基本功能：

1. 添加订单
2. 修改订单
3. 删除订单
4. 查询订单
5. 显示所有订单

在这个基础上，您可以根据实际需求进行扩展，比如：

1. 导出订单
2. 订单统计
3. 订单归档
4. 等等

接下来，您可以根据需要实现一个订单管理类，用于管理和操作订单，具体代码可以参考下面的示例：

import java.util.ArrayList;
import java.util.List;

public class OrderManager {
    private List<Order> orders = new ArrayList<>();

    public void addOrder(Order order) {
        orders.add(order);
    }

    public void deleteOrder(int orderNumber) {
        for (Order order : orders) {
            if (order.getOrderNumber() == orderNumber) {
                orders.remove(order);
                break;
            }
        }
    }

    public void updateOrder(int orderNumber, String status) {
        for (Order order : orders) {
            if (order.getOrderNumber() == orderNumber) {
                order.setStatus(status);
                break;
            }
        }
    }

    public Order queryOrder(int orderNumber) {
        for (Order order : orders) {
            if (order.getOrderNumber() == orderNumber) {
                return order;
            }
        }
        return null;
    }

    public List<Order> getAllOrders() {
        return orders;
    }
}

在此基础上，您可以编写一个简单的控制台程序来测试订单管理系统的功能，比如：

public class OrderSystem {
    public static void main(String[] args) {
        OrderManager orderManager = new OrderManager();

        Order order1 = new Order(1, "Service A", 100.0, "New");
        Order order2 = new Order(2, "Service B", 200.0, "New");
        Order order3 = new Order(3, "Service C", 300.0, "New");

        orderManager.addOrder(order1);
        orderManager.addOrder(order2);
        orderManager.addOrder(order3);

        System.out.println("All orders:");
        for (Order order : orderManager.getAllOrders()) {
            System.out.println(order);
        }

        orderManager.deleteOrder(2);

        System.out.println("All orders after deleting order 2:");
        for (Order order : orderManager.getAllOrders()) {
            System.out.println(order);
        }

        orderManager.updateOrder(3, "Completed");

        System.out.println("Order 3 after updating status to completed:");
        System.out.println(orderManager.queryOrder(3));
    }
}

这样，您就可以创建一个简单的订单管理系统，并且可以根据需要进行扩展和优化。