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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.
How many JSP scripting elements and what are they? Ans) Three scripting language elements are there: a) declarations, b) scriptlets, c) expressions.
JavaScript supports the normal control structures: The conditionals if, if...else, & switch; The iterations for, while, do...while, break, & continue;
Java has some bugs in its applets. Java team stated that they have zero tolerance over security features and subsequent editions of Java are managing Bug free environment. Some of
Two types of bean injections are there:- 1. By setter 2. By constructor
Illustrate the method to print on the GUI Example Code: Taking Input / Output So far, we learned how to print something on console. Now time has come to learn how to print
i) Set the number of data points to 20 and the number of clusters to 2. Check box Show History. Click on Initialize. Click on Start. Click on Step . Observe which points ch
Design A Word document/ report containing program design documentation, including UML diagrams (Use case, class and sequence) and written descriptions of each class or module
data structure
How instant messaging works? Write the steps involved in this process? The Instant Messaging services available permit us to manage a list of people (contacts) that we interact
Prepare an android keyboard Project Description: I want to prepare an android keyboard that have many features.( i will describe later) I want the full app and a trial ver
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