Java Servlets, now part of the Jakarta EE platform, are server-side programs that handle client requests and generate dynamic web content. They run on a web server and provide a robust framework for building web applications. Practicing this Java Servlet MCQs can be incredibly beneficial for checking your fundamental knowledge of servlets and improving your coding skills.
Jakarta Servlets offer advantages such as platform independence, scalability, and ease of integration with other Java technologies.
You can also explore more about Jakarta Servlets on Oracle’s official documentation.
Servlet Introduction MCQs
Ready to test your knowledge? Let’s dive into some multiple-choice questions to reinforce your understanding of
What is a servlet in Java?
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Correct Answer: B
A servlet is a Java program that runs on a server, extending its functionality to handle HTTP requests and responses.
Which package contains the core classes and interfaces for servlets?
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Correct Answer: A
The javax.servlet package contains the classes and interfaces necessary for creating servlets.
Which method of a servlet is called once when the servlet is loaded?
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Correct Answer: A
The init() method is called once when the servlet is initialized.
Which interface must be implemented to create a servlet?
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Correct Answer: B
The Servlet interface must be implemented to create a servlet.
What does the service() method do in a servlet?
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Correct Answer: C
The service() method is responsible for handling HTTP requests and generating corresponding responses.
Which method is used to handle HTTP GET requests in an HttpServlet?
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Correct Answer: A
The doGet() method is specifically designed to handle HTTP GET requests.
What is the lifecycle of a servlet?
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Correct Answer: B
The lifecycle methods of a servlet are called in the order: init(), service(), and destroy().
What is the purpose of the destroy() method in a servlet?
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Correct Answer: A
The destroy() method is called before the servlet is removed from memory and is used to release resources.
What is the role of the web.xml file in a servlet-based application?
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Correct Answer: A
The web.xml file is the deployment descriptor that configures servlet mappings, initialization parameters, and other settings.
Which annotation is used to define a servlet in Java?
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Correct Answer: A
The @WebServlet annotation is used to define a servlet in Java.
What is the purpose of the ServletConfig interface?
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Correct Answer: A
The ServletConfig interface provides initialization parameters for a specific servlet.
Which interface is used to provide application-wide configuration details in a servlet?
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Correct Answer: C
The ServletContext interface provides application-wide configuration details.
Which HTTP method is idempotent and typically used for retrieving data?
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Correct Answer: C
The GET method is idempotent and is used to retrieve data from the server.
How can you forward a request to another resource in a servlet?
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Correct Answer: C
The RequestDispatcher.forward() method is used to forward a request to another resource.
What is a filter in servlet programming?
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Correct Answer: B
A filter is used to preprocess requests and postprocess responses, often for purposes like logging or authentication.
Which HTTP status code is used to indicate a successful request?
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Correct Answer: B
The HTTP 200 status code indicates a successful request.
How can session tracking be implemented in servlets?
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Correct Answer: C
Session tracking can be implemented using cookies, URL rewriting, and the HttpSession interface.
Which method is used to send a redirect response to the client?
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Correct Answer: B
The sendRedirect() method is used to redirect the client to a different URL.
What is the default port for a servlet container like Tomcat?
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Correct Answer: A
The default port for servlet containers like Tomcat is 8080.
What is the primary role of the HttpServlet class?
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Correct Answer: C
The HttpServlet class is designed to handle HTTP-specific services by providing implementations for methods like doGet() and doPost().
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