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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.
Extend the given drawing program (the version that allows undo and redo) as follows: a) Allow the user to select font and font size; user should also be able to boldface, underl
System Program Project Description: I want someone who can study my existing program and from there the updates may be done Skills required: Java, Oracle, MySQL, Softwa
What is JavaServer Faces event and listener model? Ans) A mechanism for verifying how events emitted by JavaServer Faces UI components are handled. This model is based on the Ja
The different types of actions in Struts are: ? DispatchAction ? LookupDispatchAction ? ForwardAction ? SwitchAction ? IncludeAction
#question.Write a program to find the area under the curve y = f(x) in java.
For this assignment you are provided with a class called LNode which can be used as a list node for a linked list of ints. You are also provided with an abstract class called LList
Question: (a) Describe what is meant by a ‘constructor' in Java. Use a simple example to illustrate your answer. (b) Differentiate between a class method and an instance me
Consider the following code? What input is needed for x in order for the sum variable that is output at the end of the code to be 12 ? (In other words: what do I need to make X be
The significant methods of ActionForm are: validate () & reset ().
What does the " abstract " keyword mean in front of a method and a class ?
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