Interview Questions and Answers For Freshers

21.What is default scope of bean in Spring framework? The default scope of bean is Singleton for Spring framework.

11.What are types of IoC containers? Explain them. There are two types of IoC containers: Bean Factory container: This is the simplest container providing basic support for DI .The BeanFactory …

1.What is Spring? Spring is an open source development framework for enterprise Java. The core features of the Spring Framework can be used in developing any Java application, but there …

41.How to create a session in servlet? You would get HttpSession object by calling the public method getSession() of HttpServletRequest, as below: // Create a session object if it is …

31.Can multiple filters be configured? Yes. 32.Can filtering be done in an ordered way? If so then how to achieve it? Yes. The order of filter-mapping elements in web.xml determines …

21.How to send an authentication error from a servlet? We can use setStatus(statuscode) method of HttpServletResponse to send an authentication error. // Set error code and reason. response.sendError(407, “Need authentication!!!” …

11.For what purpose destroy() method of a servlet is used? This method gives your servlet a chance to close database connections, halt background threads, write cookie lists or hit counts …

1.What are Servlets? Java Servlets are programs that run on a Web or Application server and act as a middle layer between a request coming from a Web browser or …

41.What HTTP Status Code 200 states? It means, OK, shows success.

31.Which header of HTTP response provides control over caching? Cache-Control is the primary header to control caching.