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

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;

Difference between an application server and a web server, An application s...

An application server creates data for a Web server - as, collecting data from databases, processing security checks, applying relevant business programs, and/or storing the state

What is the string concatenation, What is the String Concatenation + Op...

What is the String Concatenation + Operator is employed to concatenate strings - System.out.pritln ("Hello" + "World") will print Hello World on console String concatenat

What is constructors and explain with an example, What is Constructors? Exp...

What is Constructors? Explain with an example? A constructor forms a new instance of the class. It initializes all the variables and does any work essential to prepare the clas

Write a java code to draw ovals and circles, Write a java code to draw Oval...

Write a java code to draw Ovals and Circles? Java has techniques to draw outlined and filled ovals. As you'd probably guess these methods are called drawOval() and fillOval() c

Fibonacci, Output first x values in the fibonacci sequence, where x is an a...

Output first x values in the fibonacci sequence, where x is an argument to the program. 0, 1, 1, 2, 3, 5, 8, ... Write the fibonacci creation function separate from the main func

Write a java rest client, Write a Java REST client to perform the following...

Write a Java REST client to perform the following- The client will read the contents of the file - invoice.txt. The first line of the file will display the type of the currency.

Loops, Use a while loop to count down from 100 and display all the numbers ...

Use a while loop to count down from 100 and display all the numbers in the * following pattern (you have to figure out what the pattern is - don''t go below 0): * 100 99 97 94

Conversation to html, Conversation to HTML Project Description: We ha...

Conversation to HTML Project Description: We have inner pages to be transformed into html for travel domain. 1. Flight search page for one way and round trip 2. Bus res

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