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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.
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.
Aspect-Oriented Programming (AOP) represents OOP (Object Oriented Programming) by giving the developer to dynamically change the static OO model to make a system that can
YES. JSP technology is extensible by the development of custom actions, or tags, which are encapsulated in tag libraries. #question..
what are Objects and Fields in java
what is the use of marker interface?
Task - Defining a Student class The below illustration will explain how to write a class. We want to write a "Student" class which - should be able to store the below charac
data structure
Elaborate with examples Vector or Object oriented graphics? Vector or Object-Oriented Graphics treats everything which is drawn as an object. Objects retain their identity afte
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require assistance in Java / Grails support We have a project which requires continuous maintenance / support and occasional feature development. Its running on Java 1.7 / Grail
What do mean by synchronized methods and synchronized statements ?
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