来帮我看看jacorb corba 为什么会出错

Question

poa策略，绑定对象的方式好像不对，给你个例子：
－－－－－－－            // 初始化ORB
            org.omg.CORBA.ORB orb = org.omg.CORBA.ORB.init(args, null);
            
            // 取根POA的引用
            POA rootPOA = POAHelper.narrow(
                orb.resolve_initial_references("RootPOA"));
            
            // 创建持久POA的策略
            org.omg.CORBA.Policy[] policies = {
                rootPOA.create_lifespan_policy(LifespanPolicyValue.PERSISTENT)
            };
            
            // 用新定义的策略创建myPOA
            POA myPOA = rootPOA.create_POA("BankPOA",
                rootPOA.the_POAManager(), policies);
            
            // 创建伺服对象
            AccountManagerImpl managerServant = new AccountManagerImpl();
            
            // 在myPOA上用标识"BankManager"激活伺服对象
            myPOA.activate_object_with_id(
                "BankManager".getBytes(), managerServant);
            
            // 激活POA管理器
            rootPOA.the_POAManager().activate();
            
            // 等待处理客户程序的请求
            System.out.println("帐户管理员BankManager已就绪 ...\n");
            orb.run();