acmeinvoicer.java

Java程序设计技巧与开发实例附书源代码。

public class AcmeInvoicer
    implements MenuUser
{
   private final static String MENU[] =
       {
       "[I] Invoices", "[V] Inventory"};
   private Inventory inventory = new Inventory();
   private Menu menu = null;

   public AcmeInvoicer()
   {
      menu = new Menu("Acme Invoicing System, Main Menu", MENU, this);
   }

   public void performAction(String command)
   {
      if (command.equalsIgnoreCase("I"))
      {
         menu = new Menu(Invoice.TITLE, Invoice.MENU,
                         new Invoice(inventory, Util.getString("Name")));
      }
      else if (command.equalsIgnoreCase("V"))
      {
         menu = new Menu(Inventory.TITLE, Inventory.MENU, inventory);
      }
   }

   public static void main(String args[])
   {
      AcmeInvoicer ai = new AcmeInvoicer();
   }
}