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

How many jsp scripting elements , How many JSP scripting elements and what ...

How many JSP scripting elements and what are they? Ans) Three scripting language elements are there: a)      declarations, b)      scriptlets, c)       expressions.

Control structures, JavaScript supports the normal control structures: ...

JavaScript supports the normal control structures: The conditionals if, if...else, & switch; The iterations for, while, do...while, break, & continue;

Explain about the security aspect of java, Java has some bugs in its applet...

Java has some bugs in its applets. Java team stated that they have zero tolerance over security features and subsequent editions of Java are managing Bug free environment. Some of

What are the different types of bean injections, Two types of bean injectio...

Two types of bean injections are there:- 1. By setter 2. By constructor

Illustrate the method to print on the GUI, Illustrate the method to print o...

Illustrate the method to print on the GUI Example Code: Taking Input / Output So far, we learned how to print something on console. Now time has come to learn how to print

K-means clustering, i) Set the number of data points to 20 and the number o...

i) Set the number of data points to 20 and the number of clusters to 2. Check box Show History. Click on Initialize. Click on Start. Click on Step . Observe which points ch

A java gui application, Design A Word document/ report containing pro...

Design A Word document/ report containing program design documentation, including UML diagrams (Use case, class and sequence) and written descriptions of each class or module

How instant messaging works explain their process, How instant messaging wo...

How instant messaging works? Write the steps involved in this process? The Instant Messaging services available permit us to manage a list of people (contacts) that we interact

Prepare an android keyboard, Prepare an android keyboard Project Descrip...

Prepare an android keyboard Project Description: I want to prepare an android keyboard that have many features.( i will describe later) I want the full app and a trial ver

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