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</p> Signup and view all the answers

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

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

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

    <p>HttpSession</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</p> Signup and view all the answers

    In which package can the HttpSession interface be found?

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

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

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

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

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

    What is the purpose of the ServletConfig interface?

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

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

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

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