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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.
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
An execution of the JMS interface for a Message Oriented Middleware (MOM). Providers are executed as either a Java JMS execution or an adapter to a non-Java MOM.
These applications are like any Java application. They are made up of not many classes, each performing a particular purpose within the application. But these classes are configure
Preventing Applet Based Social Engineering Attacks To help avoid this, Java applet windows are specifically labeled as such along with an ugly bar that says: "Warning: Applet W
Number = new Array(5); var abc=4; for(var i=1; i { Number[i]= abc*i; } Number.reverse(); for(j=0;j { document.write(" "+Number[j]+" "); } A) What should be output of above co
What is Initializing Fields ? Fields can (and often should) be initialized while they're declared, just like local variables. class Car { String licensePlate = ""; // e.g
What is Multiple Inheritance ? A few object oriented languages, notably C++, permits a class to inherit from more than one unrelated class. This is known as multiple inheritanc
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The state chart diagram given below defines the thread states. 1. Runnable - waiting for its turn to be picked for performing by the thread scheduler based o
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