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

Mobile android application, Project Description: Overview I am seekin...

Project Description: Overview I am seeking an Oracle ADF mobile app and web service to be created that takes a list of contacts stored on an Android mobile phone or tablet an

Write a cgi program, Write a CGI program in R, accessible through the class...

Write a CGI program in R, accessible through the class web server, that performs an analysis or creates a graph. You can provide a separate HTML page that displays the initial form

Explain term literals in java, Explain term Literals in java? Literals ...

Explain term Literals in java? Literals are pieces of Java source code which mean exactly what they say. For example "Hello World!" is a String literal and its meaning is the w

Explain what is constructors, Explain what is constructors ? It is freq...

Explain what is constructors ? It is frequent the case in which overloaded techniques are essentially the similar except that one supplies default values for a few of the argum

What is an objects lock, What is an object's lock and which objects have lo...

What is an object's lock and which objects have locks? An object's lock is a mechanism that is used by multiple threads to get synchronized access to the object. A thread may i

BLP java program, could you please help me with my assignment. My program ...

could you please help me with my assignment. My program need to implement a multi{level role based database script SQL-like generation program. Or part of one anyway. Start with a

Three ways in which a thread can enter the waiting state, What are three wa...

What are three ways in which a thread can enter the waiting state ?

Stream as an object, What interface must an object implement before it can ...

What interface must an object implement before it can be written to a stream as an object?      Ans) An object must execute the Serializable or Externalizable interface before i

Brute force search, how to implement brute foce in a program?

how to implement brute foce in a program?

What is overloading explain with an example, What is Overloading explain wi...

What is Overloading explain with an example? Overloading is while the similar method or operator can be used on several different kinds of data. For example the + sign is used

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