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Spring - Interview Questions and Answers for 'Framework' - 34 question(s) found - Order By Newest | ||||
Recently asked in TCS , Tech Mahindra, HCL , Accenture and Fidelity. | ||||
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Ans. The DispatcherServlet configured in web.xml file receives the request. The DispatcherServlet finds the appropriate Controller with the help of HandlerMapping and then invokes associated Controller. Then the Controller executes the logic business logic and then returns ModeAndView object to the DispatcherServlet. The DispatcherServlet determines the view from the ModelAndView object. Then the DispatcherServlet passes the model object to the View. The View is rendered and the Dispatcher Servlet sends the output to the Servlet container. Finally Servlet Container sends the result back to the user. | ||||
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Like Discuss Correct / Improve  j2ee   spring   mvc   frameworks   web applications   architecture Asked in 11 Companies Basic   frequent | ||||
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Ans. Spring enables developers to develop enterprise-class applications using POJOs. The benefit of using only POJOs is that you do not need an EJB container product. Spring is organized in a modular fashion. Even though the number of packages and classes are substantial, you have to worry only about ones you need and ignore the rest. Spring does not reinvent the wheel instead, it truly makes use of some of the existing technologies like several ORM frameworks, logging frameworks, JEE, Quartz and JDK timers, other view technologies. Testing an application written with Spring is simple because environment-dependent code is moved into this framework. Furthermore, by using JavaBean-style POJOs, it becomes easier to use dependency injection for injecting test data. Spring is web framework is a well-designed web MVC framework, which provides a great alternative to web frameworks such as Struts or other over engineered or less popular web frameworks. Spring provides a convenient API to translate technology-specific exceptions (thrown by JDBC, Hibernate, or JDO, for example) into consistent, unchecked exceptions. Lightweight IoC containers tend to be lightweight, especially when compared to EJB containers, for example. This is beneficial for developing and deploying applications on computers with limited memory and CPU resources. Spring provides a consistent transaction management interface that can scale down to a local transaction | ||||
Sample Code for spring | ||||
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Like Discuss Correct / Improve  java   spring framework   mvc   spring container   architecture   technical architect   java architect   technical lead  ioc Asked in 2 Companies basic   frequent | ||||
Very frequently asked.Usually among first few questions. | ||||
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Ans. MVC is a Design Pattern that facilititates loose coupling by segregating responsibilities in a Web application 1. Controller receives the requests and handles overall control of the request 2. Model holds majority of the Business logic, and 3. View comprise of the view objects and GUI component | ||||
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Try 1 Question(s) Test | ||||
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Ans. Struts 1 actions are singleton. So all threads operates on the single action object and hence makes it thread unsafe. Struts 2 actions are not singleton and a new action object copy is created each time a new action request is made and hence its thread safe. | ||||
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Ans. It helps in doing end to end Integration Testing | ||||
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Like Discuss Correct / Improve  mocking frameworks   mockito   unit testing   junits | ||||
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Ans. The Spring Framework supports following five scopes - Singleton prototype request session global-session | ||||
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Ans. Initialize required objects for working with mocks and tested method Set the mock behaviour on dependent objects Execute the tested method Perform assertions Verify if a method is invoked or not | ||||
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Ans. Google Guice , Spring , PicoContainer and Dagger. | ||||
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Like Discuss Correct / Improve  dependency injection   di   frameworks   ioc | ||||
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Ans. Spring caching makes use of its intercepting capabilities to add caching to method calls. Therefore, the entire object is cached and reused. Hibernate, on the other hand, has more domain-specific knowledge of the Entity being cached and can handle the objects more appropriately. | ||||
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Like Discuss Correct / Improve  spring framework   hibernate   spring cache   hibernate cache | ||||
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Ans. I have primarily worked on Web applications and hence worked on Struts , Spring , Hibernate, JSF ( Java Server Faces ) , Velocity etc. | ||||
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Ans. There are seven core modules in spring Spring MVC The Core container O/R mapping DAO Application context Aspect Oriented Programming or AOP Web module | ||||
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Ans. Spring configuration file is an XML file. This file contains the classes information and describes how these classes are configured and introduced to each other. | ||||
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Ans. The default scope of bean is Singleton. | ||||
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Very Frequently asked Spring question. | ||||
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Ans. The Spring container is able to autowire relationships between collaborating beans. This means that it is possible to automatically let Spring resolve collaborators (other beans) for your bean by inspecting the contents of the BeanFactory without using | ||||
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Frequently asked in Phone Interviews. | ||||
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Ans. Singleton , Prototype , Request , Session , global-session | ||||
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Ans. Hibernate is a Java ORM Framework. | ||||
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Ans. Mockito, PowerMock, EasyMock, JMock, JMockit | ||||
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Ans. Jersey , Restlet , RestX, Spring , RestEasy ,Restfulie, Play Framework | ||||
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Like Discuss Correct / Improve  java   rest   web services   frameworks | ||||
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Ans. I like Spring as it comes with inbuilt Dependency Injection framework. It has great online community and support and is proven to work well with ORMs like Hibernate. If we are not working with ORM and DI, Struts 2 is also good. | ||||
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Ans. @Autowired and @Inject are similar in terms of functionality they achieve. @Inject is part of a new Java technology called CDI that defines a standard for dependency injection whereas @Autowired is a Spring specific annotation for dependency injection. | ||||
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Like Discuss Correct / Improve  spring   web frameworks   dependency injection   autowired   inject   spring annotations   ioc | ||||
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Ans. No, if required we should only have final variables.Bean scoped singleton means that only one instance of the bean will be created and will be shared among different requests and hence instance variables will get shared too. | ||||
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Like Discuss Correct / Improve  java   singleton   spring framework   spring beans | ||||
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Ans. Struts 1 | ||||
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Ans. Java | ||||
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Like Discuss Correct / Improve  hadoop   bigdata   big data   map-reduce   map reduce framework | ||||
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Ans. Hadoop is an open source framework , written in java by apche software foundation. This framework is used to write applications to process vast amount of data. Processing happens in parallel on large clusters which could have 1000 of computers. It processes data in a very reliable and fault tolerant manner. | ||||
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Ans. Web Framework - Spring , Struts, Play Dependency Injection frameworks - Google Guice , PicoContainer and Dagger ORM Framework - Hibernate Big Data / ETL Frameworks - Apche Hadoop , Apache Crunch, Apache Spark. View Frameworks - JSF , Apache Wicket,jtwig. Java Gui Frameworks - SWT , AWT, JavaFX Testing - Junit, Mockito, PowerMock, EasyMock, JMock, JMockit Rest Web services - Jersey , Restlet , RestX, RestEasy ,Restfulie Here is the big list for reference - http://javasearch.buggybread.com/home2.php?keyword= | ||||
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Like Discuss Correct / Improve  frameworks Asked in 2 Companies intermediate   frequent | ||||
Frequently asked Spring interview question. | ||||
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Ans. Core: [Core, Bean, Context, Expression Language] Web: [Web, Portlet, Servlet, etc] Data Access [JMS, JDBC, etc] AOP, Aspect | ||||
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Ans. JSF, Apache Wicket and Apache Velocity | ||||
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Like Discuss Correct / Improve  view framework | ||||
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This question is still unanswered. Can you please provide an answer. | ||||
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This question was recently asked at 'Sofi'.This question is still unanswered. Can you please provide an answer. | ||||
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Ans. Initializes objects annotated with Mockito annotations | ||||
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