7-10.java

J2EE 1.4程序设计教程图书配套的源代码

public boolean buyItems(PaymentInfo paymentInfo， String storeName，
List items) {
      // Load up the initial context
      Context ctx = new InitialContext();
      // Look up a bean's home interface
      Object obj = ctx.lookup("java:comp/env/ejb/PurchaseHome");
      PurchaseHome purchaseHome =
       (PurchaseHome)PortableRemoteObject.narrow(obj， PurchaseHome.class);
      Purchase purchase = purchaseHome.create(paymentInfo);
      // Work on the bean
      for (Iterator i = items.iterator(); i.hasNext(); ) {
          purchase.addItem((Item)i.next());
      }
      // Look up another bean
      Object obj = ctx.lookup("java:comp/env/ejb/InventoryHome");
      InventoryHome inventoryHome =
       (InventoryHome)PortableRemoteObject.narrow(obj， InventoryHome.class);
      Inventory inventory = inventoryHome.findByStoreName(storeName);
      // Work on the bean
      for (Iterator i = items.iterator(); i.hasNext(); )
          inventory.markAsSold((Item)i.next());
      }
      // Do some other stuff
}