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J2ee Questions And Answers Pdf

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It gives you a runtime environment for developing and running large-scale, multi-tiered, scalable, reliable, and secure network applications. The J2EE platform comprises the list of services, APIs, and protocols that enable the development of multi-tiered, Web-based applications. Most of these specifications are implemented using Java. You can refer more about the J2EE from the wiki. Time limit: 0 Quiz-summary 0 of 20 questions completed.


There are lot of opportunities from many reputed companies in the world. According to research J2EE has a market share of about 7. Enthusiastic about exploring the skill set of J2EE? Ans: The Java 2 Platform Enterprise Edition J2EE is a set of coordinated specifications and practices that together enable solutions for developing, deploying, and managing multi-tier server-centric applications.

It provides value by significantly reducing the cost and complexity of developing and deploying multi-tier solutions, resulting in services that can be rapidly deployed and easily enhanced. Complete Web services support.

The J2EE platform provides a framework for developing and deploying web services on the Java platform. It provides faster solutions delivery time to market. J2EE containers provide for the separation of business logic from resource and lifecycle management, which means that developers can focus on writing business logic — their value add — rather than writing enterprise infrastructure.

For example, the Enterprise JavaBeans EJB container implemented by J2EE technology vendors handles distributed communication, threading, scaling, transaction management, etc. Similarly, Java Servlets simplify web development by providing infrastructure for component, communication, and session management in a web container that is integrated with a web server. It provides freedom of choice. J2EE technology is a set of standards that many vendors can implement.

The vendors are free to compete on implementations but not on standards or APIs. It provides simplified connectivity. J2EE technology makes it easier to connect the applications and systems you already have and bring those capabilities to the web, to cell phones, and to devices.

J2EE offers Java Message Service for integrating diverse applications in a loosely coupled, asynchronous way. By offering one platform with faster solution delivery time to market, freedom of choice, and simplified connectivity, the J2EE platform helps IT by reducing TCO and simultaneously avoiding single-source for their enterprise software needs.

Ans: Yes, if the other implementations are WS-I compliant. The J2EE 1. Ans: The J2EE 1. However, for improved reliability, scalability, and performance, it is recommended that you deploy your applications on J2EE 1. If you want to deploy your application before , and reliability,scability, and performance are critical, you should consider using a high performance application server that supports J2EE v1.

Many application server vendors are expected to release J2EE platform v1. Backwards compatibility is a requirement of the specification. Developers familiar with J2EE technology can easily apply their skills to building applications, including Web services applications, using the Sun Java Enterprise System.

Ans: You can get the source for the J2EE 1. Ans: ISVs need the J2EE platform because it gives them a blueprint for providing a complete enterprise computing solution on the Java platform. Enterprise developers need J2EE because writing distributed business applications is hard, and they need a high-productivity solution that allows them to focus only on writing their business logic and having a full range of enterprise-class services to rely on, like transactional distributed objects, message oriented middleware, and naming and directory services.

Ans: There are resources that are available for free on the Sun Solaris website that may help you resolve your issues without requiring technical support. For example you can ask questions on the forum, search for known issues on the bug data base, review the documentation, or take a look at code samples and applications to help you at no cost. Production support is also available for a fee through Sun Service.

Ans: Yes. This test suite tests compatibility by performing specific application functions and checking results. For example, to test the JDBC call to insert a row in a database, an EJB component makes a call to insert a row and then a call is made to check that the row was inserted.

That means the licensee has the compatibility tests and has made a commitment to compatibility. Sun continues to participate in development of Tomcat at Apache, focusing on keeping Tomcat current with new versions of the specifications coming out of the Java Community Source Process. Tomcat source and binary code is governed by the ASF license, which freely allows deployment and redistribution. Ans: The Enterprise JavaBeans or EJB platform handles functions such as transaction and state management, multithreading, resource pooling, and simple searches while you concentrate on writing business logic.

The API provides a platform independent and protocol independent framework to build Java technology based email client applications. Ans: The following are the design goals of J2EE architecture:. The business depends on the application without the need for customer service representatives. Data Connectivity: The application should be able to connect to mainframe systems and other legacy systems to ensure business functions as usual.

Accessibility: User should be able to connect the application from anywhere and from any electronic devices. User Interaction: The user should be able to connect to the application from desktop, laptop, PDA, and mobile. Flexibility: The architecture should be created in such a way that the developer just concentrates on the business component model business logic and the rest of the services are handled by the server.

Ans: The following are the roles of J2EE architect:. It also defines the architectural design of the component interfaces. In Design, we define the components to be created for each interface, the inputs, the outputs, algorithms, and data structures. Ans: The following activities will be performed in Architectural Analysis:. Use case diagram: This is developed to depict the high level system functionality. Class Diagram: This is developed to depict the functionality as classes and methods.

Collaboration Diagram: This is developed to depict how each class talk to each other. Sequence Diagram: This is developed to depict the operation sequence. Ans: The following activities will be performed in Architectural Design:.

Ans: The following activities will be performed in object oriented design:. Ans: The following are the components of multi-tier architecture:. Presentation Tier: The front end component is present in this tier which is used to display the presentation. Resource Tier: The back end component is present in this tier which is used to communicate with database. Business Tier: The component present in this tier is used to provide business logic for the system.

Ans: The following are the advantages of multi-tier client server architecture:. Ans: The following are the responsibilities of the bean developer:. Ans: The following are the responsibilities of application assembler:. Ans: The following are the responsibilities of bean deployer:. Ans: The third party companies that provide the software can play any of the following three roles:.

Component Provider: Responsible for developing object modeling, programming, architecture, and business process. Container Provider: Responsible for proving the environment during runtime to the server.

It usually contains the container which provides the runtime environment. The activity performed in MVC is explained below:.

It contains the components of web, EJB, and client. All the components are packed in a compressed file called. WAR represents Web Archive file.

It contains all the components related to the web application. JAR represents Java Archive file. It is used for coordinating and managing transactions across enterprise information system.

It is used for accessing information from directory services. It is used for receiving and sending messages through messaging systems. EDI is expensive to install and requires customization by the exchanging clients. EDI also relies on X12 standards to interchange documents. This makes one or more applications as single application and requires data to be transmitted to the appropriate system at the right time. For example, while integrating sales and account systems, it is necessary for sales to send sales order to accounting to generate invoice.

Also, accounting must send an invoice to sales to update data for the sales professionals. This system handles transaction automatically across application and eliminates human errors.

The following protocols are used for communicating between business tier and user interface:. DCOM supports multiple interfaces and the components can be created in various programming languages. Example of languages are: Java, C, Visual Basic, etc. DCOM is widely used in windows platform. Ans: The following are the capabilities of J2EE architecture:.

Performance: performs functionality in a short time frame. Scalability: Supports even if the load on the server increases. Flexibility: Change in hardware or architecture does not impact the system. Security: The information cannot be hacked and modified. Reusability: The component created for a system can be reused and save development time. Ans: System architecture represents the architecture as product. This comprises the component functions, interfaces of the proposed system, constraints, and interactions.

This is the base for application design implementation. Reference architecture represents architecture as method or style. For a specific domain, reference architecture refers coherent design principle. Client Tier: It represents the browser from which request is sent to the server.

Java J2ee Interview Questions Pdf Free Download

Proving your knowledge of J2EE during an interview can be the key to securing a developer job with a focus on Java. You can make a great impression by reviewing interview questions commonly asked about J2EE and practicing your responses to prepare yourself for your interview. In this article, we will examine common questions that may be asked during a J2EE interview, and provide sample answers. Employers typically ask interview questions to gauge your fundamental understanding of the J2EE platform. Some questions are asked to test your knowledge of specific functions and components of J2EE. Interviewers are typically looking for straightforward, technical answers to these questions.

Spring is largely a redundancy. Java EE 6 provides what you are likely to need from Spring a standards compliant framework. If you are still doing J2EE development I can understand why you think Spring is the better framework, however. Thanks Thomas you like these spring questions, and thanks for explaining that point some how I completely missed that. Can you add some more Spring framework interview questions , especially from spring mvc part.

J2EE means Java 2 Enterprise Edition. The functionality of J2EE is developing multitier web- based applications. The J2EE platform is consists of a set of services.

J2EE Online Test for Freshers – Java Programming

There are lot of opportunities from many reputed companies in the world. According to research J2EE has a market share of about 7. Enthusiastic about exploring the skill set of J2EE? Ans: The Java 2 Platform Enterprise Edition J2EE is a set of coordinated specifications and practices that together enable solutions for developing, deploying, and managing multi-tier server-centric applications.

J2EE is a platform independent and Java centric environment for developing, building and deploying Web-based enterprise applications online. Every programming language has their design patterns for various solutions they come across. One can check the availability of the job across cities including Mumbai, Delhi, Bangalore, Pune and Hyderabad.

Web developers, designers and intersection managers. It gives you a chance to. Residents may employ to transfer titles either online or in human. Mine was a face to face interview, some people had skype interviews. Paraphrasing helps in the process of categorisation out of import from less of import info.

Java Interview Questions and Answers PDF eBook Free Download (250+ Questions, 60 Pages)

The functionality of J2EE is developing and deploying multi-tier web-based enterprise applications.

Core Java J2EE Interview Questions and Answers Pdf - 1

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Это абсолютно исключено. - Спасибо. Джабба выдавил из себя смешок и попытался обратить все в шутку. - Если только Стратмор не придумал что-то особенное и не обошел мои фильтры.

Core Java J2EE Interview Questions and Answers Pdf - 1 · Question: 1 Are J2EE applications portable and scalable? · Question: 2 How do we package J2EE.

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