Servlet Lifecycle in Java Application Programming
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Questions and Answers

What is the purpose of the destroy() method in the servlet lifecycle?

  • To release the servlet's resources before unloading (correct)
  • To delegate the request to doGet() or doPost() methods
  • To initialize the servlet with configuration details
  • To create a response object for the client

What is the configuration file where servlet initialization parameters are read from?

  • web.xml (correct)
  • ServletConfig.java
  • HttpSession.java
  • ServletAPI.properties

How do client requests interact with servlet instances?

  • Client requests are handled by a single instance of the servlet (correct)
  • Each client request creates a new instance of the servlet
  • Client requests are handled by multiple instances of the servlet
  • Client requests are not related to servlet instances

What is the purpose of the service() method in the servlet lifecycle?

<p>To delegate the request to doGet() or doPost() methods (C)</p> Signup and view all the answers

What is the package responsible for http requests only in the Servlet API?

<p>javax.servlet.http (A)</p> Signup and view all the answers

What is the method used by the servlet to create a response object for the client?

<p>Both java.io.PrintWriter and javax.servlet.ServletOutputStream (D)</p> Signup and view all the answers

What is the purpose of the init() method in the Servlet interface?

<p>To initialize the servlet with the ServletConfig object (C)</p> Signup and view all the answers

Which of the following interfaces is used to track sessions in a Java web application?

<p>HttpSession (C)</p> Signup and view all the answers

What is the purpose of the ServletConfig object in the Servlet interface?

<p>To provide configuration information to the servlet (B)</p> Signup and view all the answers

In which package can the HttpSession interface be found?

<p>javax.servlet.http (C)</p> Signup and view all the answers

What is the correct order of the methods in the Servlet lifecycle?

<p>init(), getServletConfig(), getServletInfo(), service(), destroy() (A)</p> Signup and view all the answers

What is the purpose of the web.xml file in a Java web application?

<p>To configure the servlet container (C)</p> Signup and view all the answers

What is the purpose of the log method in the GenericServlet class?

<p>To write a message in the servlet log file (C)</p> Signup and view all the answers

What is the purpose of the service method in the HttpServlet class?

<p>To dispatch the request to the protected service method (B)</p> Signup and view all the answers

What is the purpose of the web.xml configuration file?

<p>To configure the servlet initialization parameters (C)</p> Signup and view all the answers

What is the purpose of the doGet method in the HttpServlet class?

<p>To handle GET requests (A)</p> Signup and view all the answers

What is the purpose of the ServletConfig interface?

<p>To initialize the servlet (D)</p> Signup and view all the answers

What is the purpose of the doHead method in the HttpServlet class?

<p>To handle HEAD requests (B)</p> Signup and view all the answers

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