Exception handling in EJB, JAVA Programming

Assignment Help:

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.

 

1273_Exception handling in EJB.png

 

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.

 


Related Discussions:- Exception handling in EJB

What can an applet do, What Can an Applet Do? An applet can: • Draw ...

What Can an Applet Do? An applet can: • Draw pictures on a web page • Create a new window and draw in it. • Play sounds. • Receive input from the user by the keyboard or

String, solve the string public int expression("10+20+30")

solve the string public int expression("10+20+30")

What are commonsense guidelines to prevent viruses, What are Commonsense Gu...

What are Commonsense Guidelines to prevent viruses? Discuss about Antivirus as well. Commonsense Guidelines to avoid viruses are as follows: 1. Do not open attachment of unwant

What is the use of message object, Message is a light weight message having...

Message is a light weight message having only header and properties and no payload. Therefore if the If the receivers are to be notified about an event, and no data requires to be

What is preferred organizational structure for organization, What is the pr...

What is the preferred organizational structure for the organization? The Network Organization is becoming the preferred organizational structure.

Give the javascript code output, What is output of the following JavaScript...

What is output of the following JavaScript code? Str="Virtual University of Pakistan"; document.write(str.substring(5,str.length)) ;

Connect 4 game application, This assignment is a good project for working w...

This assignment is a good project for working with 2 dimensional arrays. In this program, you will implement an ascii version of the classic game "Connect 4". Connect 4 is a 2 p

Need support display tiff in internet explorer, Need support Display TIFF i...

Need support Display TIFF in Internet Explorer without ActiveX plugin I would like to get a client side viewer designed that permits user to view TIFF files on IE 8 and IE 9 bro

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd