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

Currency calculator, I have to write a several line currency exchange rate ...

I have to write a several line currency exchange rate calculator.it wants me to use a variable and prompt var dollarAmount = Prompt("Enter amount in U.S. dollars:"); and give t

Simon game project, i''m trying to make a code to make the simon says game ...

i''m trying to make a code to make the simon says game and i can''t figure it outt

Explain what is naming applets in java applets, Explain what is Naming Appl...

Explain what is Naming Applets in java applets? You can give an applet a name by using the NAME attribute of the APPLET element. This allows communication between different app

Explain all java primitive data types, Explain all Java Primitive Data Type...

Explain all Java Primitive Data Types? boolean 1-bit. May take on the values true and false only. true and false are describe constants of the language and are not the s

Define when to use hashmap and when to use treemap, How do you decide when ...

How do you decide when to use HashMap and when to use TreeMap? When we want to perform deletion, insertion and locate elements in a Map then HashMap is used. Whereas TreeMa

Using the Case Study supplied, The report: Your report must describe the re...

The report: Your report must describe the requirements of the application, outline the design of the solution, and provide a testing procedure to prove the application works. In yo

How to catch multiple exceptions explain with example, How to catch multipl...

How to catch multiple exceptions explain with example? If multiple blocks match the exception type, the first block in which matches the kinds of the exception catches it. pub

How to drawing images at actual size, How to Drawing Images at Actual Size ...

How to Drawing Images at Actual Size Once the image is loaded draw it in the paint() method by using the drawImage() method like this g.drawImage(img, x, y, io) img is a

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

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