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Java has two kinds of exceptions:
1. Checked exception: handled from java.lang.Exception but not java.lang.RuntimeException.
2. Unchecked exception: handled from java.lang.RuntimeException thrown by JVM.
EJB has two kinds of exceptions:
1. System Exception : is an unchecked exception produced from java.lang.RuntimeException. An EJBException is an unchecked exception, which is started from java.lang.RuntimeException.
2. Application Exception : is generic to an application and thrown because of violation of business rules. An Application Exception is a checked exception that is either described by the bean developer and does not import java.rmi.RemoteException.
A System Exception is given by the system and is not recoverable. Because the System Exceptions are unpredictable when they occur, the EJB container is the only one responsible for trapping the System Exceptions. The container usually wraps any RuntimeException in RemoteException, which subsequently puts thrown to the caller. In addition to intercepting System Exception the container can give the errors.
Project Requirements • Create your own online store Web site, selling products of your choice. • Create pages that allow you to search and buy available products, as well as add,
Notice that each row now has the type of customer and the additional data needed. calculateBill remains the same in Customer. However, the calculateBill in Corporate will add a
One of the principal benefits of JMS messaging is that it's asynchronous. Thus not all the pieces require to be up all the time for the application to function as a whole.
The following set of short questions will focus on getting you familiar with JavaScript functions. All functions and testing should appear in a single XHTML 1.0 Strict page. All
When should I use abstract classes and when should I use interfaces? Use Interface, when: Design changing often or when various implementations only share method sign
I am having an combox box and values are retrieved from the database having inputs and labels i want to created the dynamic form accroding to user input on combox box values
Problem : (a) One problem encountered when designing web applications is that HTTP is a "stateless" protocol. Describe two general approaches to solve the statelessness probl
List the precedence table? At last let's add the && , || , & , | and ? operators to the precedence table *, /, % Multiplicative operators +, - Additi
The different types of actions in Struts are: ? DispatchAction ? LookupDispatchAction ? ForwardAction ? SwitchAction ? IncludeAction
how to write aprogramm that calculates gross pay, taxes, and net pay for both hourly and commission employees. It will then display those results to the screen
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