Struts2 Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to Struts2 Framework. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Q 1 - Which of the following is true in the life cycle of a request in Struct2 application?

A - User sends a request to the server for requesting for some resource (i.e pages).

B - The FilterDispatcher looks at the request and then determines the appropriate Action.

C - Configured interceptors functionalities applies such as validation, file upload etc.

D - All of the above.

Answer : D

Explanation

All of the above steps are part of the life cycle of a request in Struct2 application.

Q 2 - Which of the following is correct about dispatcher result type?

A - It is used to forward to a servlet, JSP, HTML page, and so on, on the server. It uses the RequestDispatcher.forward() method.

B - It is used to generate output using predefined templates.

C - It calls the standard response.sendRedirect() method, causing the browser to create a new request to the given location.

D - None of the above.

Answer : A

Explanation

It is used to forward to a servlet, JSP, HTML page, and so on, on the server. It uses the RequestDispatcher.forward() method.

Q 3 - Which of the following is correct about the Named Objects?

A - There are various temporary objects which are created during execution of a page.

B - The current model object is placed before the action on the value stack.

C - These objects include #application, #session, #request, #attr and #parameters and refer to the corresponding servlet scopes.

D - None of the above.

Answer : C

Explanation

These objects include #application, #session, #request, #attr and #parameters and refer to the corresponding servlet scopes.

Q 4 - What are the Struts2 error message keys that can come during file uploading process?

A - struts.messages.error.uploading

B - struts.messages.error.file.too.large

C - struts.messages.error.content.type.not.allowed

D - All of the above.

Answer : D

Explanation

All of the above are Struts2 error message keys that can come during file uploading process.

Q 5 - What is the purpose of @Action annotation?

A - This annotation is a collection of results.

B - This annotation have the name that correspond to the outcome of the execute method.

C - This annotation is used to decorate the execute() method.

D - This annotation marks a action method that needs to be called after the main action method.

Answer : C

Explanation

This is used to decorate the execute() method. The Action method also takes in a value which is the URL on which the action is invoked.

Q 6 - What is the purpose of @ExpressionValidator annotation?

A - This annotation checks that a double field has a value within a specified range.

B - This annotation checks that a field is a valid e-mail address if it contains a non-empty String.

C - This annotation validates a supplied regular expression.

D - This annotation checks that a numeric field has a value within a specified range.

Answer : C

Explanation

This non-field level validator validates a supplied regular expression.

Q 7 - What is the purpose of @CustomValidator annotation?

A - This annotation checks that a field is a valid URL.

B - This annotation is used to nest several annotations of same type.

C - This annotation can be used for custom validators.

D - This annotation checks that a String field is of the right length.

Answer : C

Explanation

This annotation can be used for custom validators. Use the ValidationParameter annotation to supply additional params.

Q 8 - Which of the following tag will iterate over a value?

A - if and else tags.

B - iterator tags

C - merge tag

D - append tag

Answer : B

Explanation

These iterator will iterate over a value. An iterable value can be any of: java.util.Collection, java.util.Iterator. While iterating over an iterator, you can use Sort tag to sort the result or SubSet tag to to get a sub set of the list or array.

Q 9 - Which of the following class acts as Listener class in struts and spring integration?

A - org.springframework.web.context.ContextLoaderListener

B - org.apache.struts2.dispatcher.FilterDispatcher

C - Both of the above.

D - None of the above.

Answer : A

Explanation

org.springframework.web.context.ContextLoaderListener acts as Listener class in struts and spring integration.

Q 10 - Struts2 is popular and mature web application framework based on the MVC design pattern.

A - true

B - false

Answer : A

Explanation

Struts2 is popular and mature web application framework based on the MVC design pattern.

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