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

Create an applet for grid layout, Take the Student Choice GUI you created i...

Take the Student Choice GUI you created in Assignment and convert it to an applet.  Because standalone GUI applications and applets are so similar, a lot of the code should be reus

What is bit-mapped or raster graphics, What is Bit-Mapped or Raster Graphic...

What is Bit-Mapped or Raster Graphics? Similar as object-oriented graphics, refers to software and hardware which use geometrical formulas to represent images. The other techni

What is inheritance in java explain with example, What is Inheritance in ja...

What is Inheritance in java Explain with example? Code reusability is claimed to be a key advantage of object-oriented languages over non-object-oriented languages. Inheritance

Method to define the packages in java programme, Q. Write the method to def...

Q. Write the method to define the packages in java programme. Explain. Ans. Package: When we work on a project we have to break our programme in several classes. To organize

Boardcoloring , n this problem you are given a board in which some of the e...

n this problem you are given a board in which some of the elements are placed as shown in diagram below. Each element represents a color. Fill the other elements in the board, such

Explain rmi architecture, RMI uses a layered architecture; every of the lay...

RMI uses a layered architecture; every of the layers could be increased or replaced without affecting the rest of the system. The details of layers can be summarised as follows:

Use of weblogic platform in project, Use of WebLogic Platform in Project: ...

Use of WebLogic Platform in Project: Technologies Tools: Weblogic 8.1, Solaris 9, MQ Series 6.0, iplanet 6.1, Mercury Test Director. Project Overview: Wellington Manag

I want android app notes, I want Android App Notes Project Description: ...

I want Android App Notes Project Description: Seeking a developer to create a simple note application I don't need all the visualize features. I just want the user to t

Constractar, Create a class HourlyWorker mind: particularHourlyWorker emplo...

Create a class HourlyWorker mind: particularHourlyWorker employee. • Declare two data members named wage and hours of double type with private access. • Implement a parameterized c

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