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Session Bean: is a non-persistent object that provides some business logic running on the server. Session beans do not provide system break down. There are two kinds of session beans
1. Stateless session beans
2. Stateful session beans
Entity Bean: is a persistent object that presents object views of the data, generally a row in a database. They have the primary key as a unique key identifier. Multiple EJB clients can give each entity bean. Entity beans may provide system shutdowns. Entity beans can have two kinds of persistence
1. Container-Managed Persistence (CMP) - The container is responsible for providing the bean's state.
2. Bean-Managed Persistence (BMP) - The entity bean is responsible for giving its own state.
Message-driven Bean: is added with the Java Message Service (JMS) to give the ability to react as a message consumer and perform asynchronous processing between the message producer and the server.
What is heuristic? Heuristic is a procedure which commonly, but not always, works or that provides nearly the right answer.
Need Minecraft Bukkit Plugin Programmer I want to make my own server for Minecraft. I am in need of a experts to make custom bukkit plugins for my server. But basically I will w
What is Runnable JAR archives You can run a program stored within the JAR archive that has a main() method like this: $ java -cp eharold.jar MainClassName You must use the f
What is Event Handler works? An event handler is a command which is used to call a function when an event happens, such as the user clicking a button or mouse.
How to draw Polygons in java? In Java rectangles are defined through the position of their upper left hand corner, their height, and their width. Therefore it is implicitly sup
What is the difference between preemptive scheduling and time slicing? Under preemptive scheduling, the highest priority task executes unless it enters the waiting or dead stat
Explain Subclasses and Polymorphism ? Car and Motorcycle are subclasses of MotorVehicle. If you instantiate a Car or a Motorcycle along with new, you can use in which object a
Using RMI, program a PONG game that enables two users to play against one another. Pong class: package graphics;/* * Copyright (c) 2006, Your Corporation. All Rights Reserved. */
Elaborate Vector or Object oriented graphics along with at least one example. Object Oriented Graphics are the graphics that are commonly oriented towards the objects and have
what will be the logic? in C program #include float start_point, /* GLOBAL VARIABLES */ end_point, total_area; int numtraps; m
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