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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.
Project Requirements • Create your own online store Web site, selling products of your choice. • Create pages that allow you to search and buy available products, as well as add,
10.13 (CarbonFootprint Interface: Polymorphism) Using interfaces, as you learned in this chapter, you can specify similar behaviors for possibly disparate classes. Governments and
The roster lets you keep track of the availability ("presence") of other users. A roster also allows you to organize users into groups such as "Friends" and "Co-workers". Other IM
JavaServer Faces (JSF) framework : JavaServer Faces is a new framework for creating Web applications using Java. JSF gives you with the following main features: Basic us
Determine the phase Loading- Java Program Development In phase 3, the program must first be placed in memory before it can be executed. This is done by the class loader, whic
1. Which of the following are not valid Java identifiers, and why? (a) wolVes (b) United(there is only one) (c) 87 (d) 5 3 (e) Real ale (f) isFound?by 2. A class Television
An RMI "service" could well be any Java method that can be invoked remotely. The other service is the JRMP RMI naming service which is a lookup service.
Write a program using local variable Public void someMethod( ) { int x; //local variable System.out.println(x); // compile time error } - Constructor - Doesn't
Write a program that takes as input a sequence of transactions of the form "buy x; share(s) at $y each" or "sell x share(s) at $y each," assuming that the transactions occur on con
Annotation or Attribute oriented programming There are two types of code generation processes. Passive code generation: is template driven . Input process are used in mo
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