Can a servlet's destroy() method be overridden? If yes, what should be considered?
- It depends on the servlet container being used.
- No, the destroy() method cannot be overridden.
- Yes, but it is not advisable to override it.
- Yes, it can be overridden, and it is recommended to do so.
Yes, a servlet's destroy() method can be overridden, but it is recommended to do so carefully, ensuring that necessary cleanup operations are performed. Considerations should be given to resource release and proper handling of exceptions in the overridden method.
A web application needs to remember user preferences across sessions. Which approach using cookies is most suitable?
- HttpOnly Cookies
- Persistent Cookies
- Secure Cookies
- Session Cookies
Persistent Cookies are suitable for remembering user preferences across sessions as they persist even after the user closes the browser.
ServletContext is used for sharing information between:
- Browser and Server
- Client and Server
- JSP and Servlet
- Web components
ServletContext is used for sharing information between web components within the same web application, like servlets, JSP pages, and other resources.
For optimizing a web application with heavy presentation logic, which technology is more suitable?
- Both
- JSP
- None of the above
- Servlet
For optimizing a web application with heavy presentation logic, JSP (JavaServer Pages) is more suitable. JSP is specifically designed for creating dynamic web pages with a focus on presentation logic, making it easier to manage and optimize the presentation layer of a web application.
What is the primary purpose of cookies in web applications?
- To execute server-side code
- To handle database connections
- To perform client-side validation
- To store user preferences
The primary purpose of cookies in web applications is to store user preferences, enabling a personalized and persistent experience for users.
Servlets are often used for processing and sending the ______ to the client.
- Data
- HTML
- Requests
- XML
Servlets are often used for processing and sending HTML to the client.
The __________ method of the ServletContext interface is used to retrieve context parameters.
- contextParam()
- getContextParameter()
- getInitParameter()
- retrieveParameter()
The getInitParameter() method of the ServletContext interface is used to retrieve context parameters associated with the servlet's context.
Session tracking using ________ involves storing a small piece of information on the client's browser.
- Cookies
- Hidden Fields
- Session ID
- URL Rewriting
Session tracking using Cookies involves storing a small piece of information on the client's browser.
To access the MIME type of a file, use the __________ method of ServletContext.
- analyzeMimeType()
- fetchMimeType()
- getMimeType()
- retrieveMimeType()
To access the MIME type of a file, use the getMimeType() method of ServletContext.
In a scenario where form data includes special characters like & and %, which approach ensures accurate data retrieval?
- Apply Base64 encoding to the form data
- HTML-escape the special characters
- URLEncode the form data before processing
- Use the raw form data directly
URLEncoding the form data before processing ensures accurate data retrieval, especially when dealing with special characters like & and %. This encoding prevents issues with parsing and processing the data correctly.