Tag: technology

Quizzes (307) Questions (36705)

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Multiple choice technology web technology

What is the equivalent action code for the following piece of JSP code snippet? EmployeeBean harry = (EmployeeBean)request.getAttribute("harry"); if (harry == null) { harry = new EmployeeBean(); request.setAttribute("harry", harry); }

  1. <jsp:declareBean id = "harry" class = "EmployeeBean" scope = "request" />

  2. <jsp:createBean id = "harry" class = "EmployeeBean" />

  3. <jsp:useBean id = "harry" class = "EmployeeBean" scope = "request" />

  4. <jsp:useBean id = "harry" class = "EmployeeBean" />

Reveal answer Fill a bubble to check yourself
C Correct answer
Full explanation
Multiple choice technology web technology

Which of the following is a valid declaration of a Tag Library in a Deployment Descriptor?

  1. <taglib> <uri>http://www.javabeat.net/studyKit&lt;/uri> <location>/studyKit.tld</location> </taglib>

  2. <taglib> <uri>http://www.javabeat.net/studyKit&lt;uri> <location>/studyKit.tld</location> </taglib>

  3. <taglib> <taglib-uri>http://www.javabeat.net/studyKit&lt;/taglib-uri> <taglib-location>/studyKit.tld</taglib-location> </taglib>

  4. <taglib> <uri>http://www.javabeat.net/studyKit&lt;/uri> <path>/studyKit.tld</path> </taglib>

Reveal answer Fill a bubble to check yourself
C Correct answer
Full explanation
Multiple choice technology web technology

A class wants to keep track of its number of objects being added to HttpSession objects. Which will be the ideal way to achieve this?

  1. Define a listener class implementing HttpSessionListener and whenever an object is added to Http Session object, keep track of the number of instances.

  2. Define a listener class implementing HttpSessionBindingListener and in the valueBound() method, keep track of the number of instances being added in a static variable.

  3. It is highly impossible to keep track the number of objects being added to a Http Session in a Web Application.

  4. The Servlet API provides direct support for keeping track the object instances.

Reveal answer Fill a bubble to check yourself
B Correct answer
Full explanation
Multiple choice technology web technology

What method can be used to retrieve all the parameter names being sent as part of the request by the client?

  1. Use the method 'HttpServletRequest.getParameterNames()' which will return an enumeration of parameter names.

  2. Use the method 'HttpServletResponse.getParameterNames()' which will return an enumeration of parameter names.

  3. Use the method 'HttpServletRequest.getAllParameters()' which will return an enumeration of parameter names.

  4. There is no direct support in the Servlet API to retrieve the name of all the parameters sent by the client.

Reveal answer Fill a bubble to check yourself
A Correct answer
Full explanation
Multiple choice technology web technology

What will be the output of the following JSP code snippet at run-time when it is accessed the third time? <% int test = 0; %> <% ++test; %> The value of test is <%= test %>

  1. The value of the 'test' variable will be 2.

  2. The value of the 'test' variable will be 0.

  3. The value of the 'test' variable will be 1.

  4. The variable 'test' must be declared at global scope, else a run-time error will occur
Reveal answer Fill a bubble to check yourself
C Correct answer
Full explanation