Category Archives: Java J2ee

Java and Web service interview questions: – Can you explain the different approaches in making Web service?

An interesting Java interview question asked in most of the interviews while discussing topic on web services. There are basically two approaches in making web service: – 1) WSDL first Implemention second: In this case the Web service definition language … Continue reading

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Real world example of Web Service

Introduction Today in this article we will look at a real world technical problem in an enterprise and how web service helps us in solving the problem. This is one of the main questions while appearing for Web Service interview. … Continue reading

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Understanding how to implement Model view Control pattern using J2EE and various Java frameworks

MVC stands for Model View Controller design pattern and is one of the widely used pattern especially in Web applications The pattern segregates the presentation or UI layer as View layer, business logic or application processing into Controller layer and … Continue reading

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.NET and Java J2EE Design pattern interview question: – What is the difference between Facade and Mediator pattern?

Answer: Facade Design pattern Aims at simplifying interface. Existence of façade is not known to sub-system. Intermediates between client and sub stem. Mediator Design pattern Aims at simplifying object interaction. Existence of mediator is known to objects since they interact … Continue reading

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.NET and Java J2ee Design pattern interview question: – What is the difference between Template and Strategy pattern

Answer: Below are the main differences between these two design patterns: Template Design pattern Defines outline for algorithms and allows sub class to override some steps. Efficient in terms of less redundant code. Depends on super class for methods. Strategy … Continue reading

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