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

Static variable, import java.text.NumberFormat; import java.util.Locale; p...

import java.text.NumberFormat; import java.util.Locale; public class Client {    // instance data    private String name;    private long income_this_year;    private double perce

What is aop(aspect oriented programming)?, Separating your business logic w...

Separating your business logic with other functionality such as services, Loggers etc, making classess more cohesive.

Recursive Division Maze Generation, can you tell me what the code for a 2d ...

can you tell me what the code for a 2d random java array using Recursive Division Maze Generation

Write a program to perform multiplication and division, Write a program to ...

Write a program to perform multiplication and division in java? Of course Java could also do multiplication and division. Because most keyboards don't have the times and divisi

What is image processing, What is image processing? It field of compute...

What is image processing? It field of computer whereas we enhance and manipulate the graphics. Like it is used to recover old photograph and through processing we can revive

Use case diagram, Depicts the typical communication between external users ...

Depicts the typical communication between external users and the system. The emphasis is on what a machine does rather than how it works it. A use case is a summary of scenarios fo

Applet draw a face , Write a Java Applet which will draw a face on applet a...

Write a Java Applet which will draw a face on applet as follows:   b)    Modify the program now by adding two Buttons (Java version of ActiveX Control) named Smily Fac

What is meant through semantic error, What is meant through semantic error?...

What is meant through semantic error? It is an error that a developer encounters while a statement is executed but it was not intended through him (the developer). Such errors ar

Page replacement algorithms code in nachos, what is the code for page repla...

what is the code for page replacement algorithms in nachos os

Answer, a program to find the area under curve y=f(x) between x=a and x=b,i...

a program to find the area under curve y=f(x) between x=a and x=b,integrate y=f(x) between the limits of a and b

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