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 Related Questions Latest Answer : An EJB object is also an java object, but as it follows the EJB Specifications, it can be remotely identified in an Application server. An java object can be deployed in an application server, but cannot be idetified. i.e A java object can be in the classpath ... Answered by Jey on 2005-05-08 11:32:16: CMP means Container Managed Persistence. When we write CMP bean , we dont need to write any JDBC code to connect to Database. The container will take care of connection Latest Answer : CMP means Container Managed Persistence. In case of CMP bean , developers dont need to write any JDBC code to connect to Database. The container will take care of connection our enitty beans fields with database. The Container manages the persistence ... Answered by Jey on 2005-05-08 12:30:37: Message Driven Bean (MDB) is an enterprise bean which runs inside the EJB container and it acts as Listener for the JMS asynchronous message . It does not have Home Latest Answer : Message Driven Bean (MDB) is an enterprise bean which runs inside the EJB container and it acts as Listener for the JMS asynchronous message . It does not have Home and Remote interface as Session or Entity bean. It is called by container when container ... Answered by Nikhil on 2005-05-11 01:52:59: The lifetime of an MDB instance is controlled by the container. Only two states exist: Does not exist and Ready , as illustrated in the following figure: The Latest Answer : The lifetime of an MDB instance is controlled by the container. Only two states exist: Does not exist and Ready , as illustrated in the following figure: The life of an MDB instance starts when the container invokes newInstance() ... Answered by Nikhil on 2005-05-11 11:28:14: Lazy loading is a characteristic of an application when the actual loading and instantiation of a class is delayed until the point just before the instance is Latest Answer : In Lazy loading, you load the child data as and when required.Example:public class OrderBean implements EntityBean { private long orderId; private String orderName; ... Latest Answer : 2 types of exceptions can occur 1.System Exception - We can define some error codes the in the property file and show it to the JSP 2.Application Exception.. - We can customise the exception and show the appropriate error ... Is it possible to share an HttpSession between a JSP and EJB. What happens when I change a value in the HttpSession from inside an EJB How can i retrieve from inside my Bean(Stateless session and Entity CMP) the user name which i am serving (the user name of user just logged in my web application) Inside an EJB you may retrieve the "Caller" name, that is the login id by invoking: sessionContext.getCallerIdentity().getName() where sessionContext is the instance of "SessionContext" Is there a way to get the original exception object from inside a nested or wrapped Exception (for example an EJBException or RemoteException) Absolutely yes, but the way to do that depends on the Exception, since there are no standards for that. Some examples: ·When you have an javax.ejb.EJBException, you can use the getCausedByException() What is the diff between interface and abstract class?why interfaces?why packages?why abstract class?what is the diff between uncheked exception,checked exceptions?why jvm works internally?why java does not support pointers?what is diff bet callby value and call by reference in java? Read Answers (8) | Asked by : balaraju Tags : Abstract
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