RMI中向server中添加东西具体用什么代码实现呢？

RMI中向server中添加东西具体用代码表示为

public static void main(string[l args) throws RemoteException, NamingException}
System.out.println("Constructing server implementation..."); WarehouseImpl backupWarehouse = new WarehouseImpl(null);
WarehouseImpl centralWarehouse = new WarehouseImpl(backupWarehouse);

centralWarehouse.add("toaster", new Product("Blackwell Toaster", 23.95));
backupWarehouse.add("java", new Book("Core Java vol. 2"， "0132354799", 44.95));