Java Servlet FirstServlet Quiz
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Questions and Answers

What is an advantage of using a hidden form field?

Maintaining user state without showing the information visibly

What is a disadvantage of using a hidden form field?

Security risk - sensitive information can be exposed

Give an example scenario of using a hidden form field in a servlet application.

Storing user authentication credentials in a hidden field

What is the purpose of a hidden form field?

<p>Maintaining the state of a user</p> Signup and view all the answers

What can happen if a hidden form field is not securely implemented?

<p>Sensitive information leakage</p> Signup and view all the answers

How many short answer essay questions were requested in the task?

<p>6</p> Signup and view all the answers

What does the underscore _ signify in JSP?

<p>That you cannot override this method</p> Signup and view all the answers

How can Java code be written inside a JSP page?

<p>Using the scriptlet tag</p> Signup and view all the answers

What is the purpose of a JSP expression tag?

<p>To print the values of variables or methods</p> Signup and view all the answers

Where is the code written inside a JSP declaration tag placed?

<p>Outside the service() method of the auto-generated servlet</p> Signup and view all the answers

What are the advantages of using hidden form fields?

<p>Passing information between pages without displaying it to users</p> Signup and view all the answers

Provide an example of using a hidden form field.

<p>Storing a user's ID to maintain session state</p> Signup and view all the answers

Explain the real-world application of hidden form fields with an example.

<p>Hidden form fields are widely used in comment forms on websites. In such cases, the page ID or page name is stored in the hidden field to uniquely identify each page.</p> Signup and view all the answers

What is the primary advantage of using hidden form fields?

<p>The main advantage of hidden form fields is that they will always work whether cookies are disabled or not.</p> Signup and view all the answers

Describe a significant disadvantage of using hidden form fields.

<p>A major disadvantage of hidden form fields is that they are maintained on the server-side, requiring extra form submissions on each page.</p> Signup and view all the answers

What type of data can be stored in a hidden form field? Explain with an example from the given code.

<p>Hidden form fields can only store textual information. In the given code example, the hidden field named 'uname' stores the textual value 'Vimal Jaiswal'.</p> Signup and view all the answers

Analyze the code snippet provided and explain the purpose of the getParameter() method used in the SecondServlet class.

<p>In the <code>SecondServlet</code> class, the <code>getParameter()</code> method is used to retrieve the value of the hidden form field named 'uname' from the request object. This value is then printed on the response page using <code>out.print(&quot;Hello &quot; + n);</code>.</p> Signup and view all the answers

Based on the given information, explain the process of using hidden form fields across multiple pages in a web application.

<p>In a web application spanning multiple pages, hidden form fields can be used to persist data across page transitions. The data is stored in a hidden field on one page, submitted to the server, and retrieved from the request object on the next page using the <code>getParameter()</code> method.</p> Signup and view all the answers

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