Top JSP Interview Questions for Every Java Professional

30+ JSP Interview Questions and Answers 2022

1. Expand the JSP.

The term “JSP” stands for Java Server Pages.

2. What is the use of Java Server Pages (JSP)?

JSP is used to develop dynamic web content.

3. Mention some advantages of using Java Server Pages (JSP).

There are some advantages of developing web applications using Java Server Pages. They are

1. Enables tag-based programming
2. Enables exception handling
3. More code readability
4. No need to reload the app, changes are visible in

JSP program automatically etc.

4. State whether the given statement is true or false?

Statement: Java Server Pages (JSP) run faster than Servlet.

False, Java Server Pages (JSP) run slower than Servlet.

5. What are Java Servlets?

These are the Java programs that run on a Java-based application server or web server. Its purpose is to extend the capabilities of servers by following the request-response programming paradigm.

6. What are the different types of Java Server Page (JSP) elements?

There are three (3) different types of Java Server Page (JSP) elements. They are

1. Action
2. Directive and
3. Scripting

7. List some of the Directive type elements in a Java Server Page (JSP)

Here are some of the directive type elements in a Java Server Page (JSP).

1. <%@ включват …%>
2. <%@ страница …%>
3. <%@ taglib …%>

8. List some of the Action type elements in a Java Server Page (JSP)

Here are some of the Action type elements in a Java Server Page (JSP).

8. etc

9. List some of the Scripting type elements in a Java Server Page (JSP).

Here are some of the script type elements in a Java Server Page (JSP).

1. <%...коментирайте...%>
2. <%@директива%>
3. <%scriptlets%>
4. <%!декларации%>

10. What is a Java Server Page (JSP) comment tag?

A Java Server Page (JSP) comment tag is a type of script tag that is used to provide a brief explanation of a piece of code written by the developer. Its syntax is presented here:

The syntax is <%...коментари...%>

11. What is a hidden comment?

A comment on a clean Java Server Page (JSP) is called a hidden comment.

12. What is a directive tag in a Java Server Page (JSP)?

The Directive tag in a Java Server Page (JSP) helps in giving special instructions to the web container during page translation.

13. What is the use of the Page directive in a Java Server Page (JSP)?

A page directive in JSP is used to define several types of page-independent properties, such as sessions.

14. List some of the statements in a Java Server Page (JSP).

There are different types of Java Server Page (JSP) statements. They are:

1. . Record on the card
2. [ ] access an array element
3. + Supplement
4. – Subtraction
5. X Multiplication
6. / Separation
7. % Modulo
8. == Equality condition
9. != Inequality condition

And so on

15. Explain for loop in JSP.

In a Java Server Page (JSP), a for loop is used to iterate over a list or array of elements. There are some steps involved in it. First, initialize a variable that is used to iterate through the loop. Second, execute the statements inside the loop only when the condition evaluates to TRUE. Finally, update the variable by incrementing or decrementing it.

16. What is Expression Tag in Java Server Page (JSP)?

In a Java Server Page (JSP), an express tag is used to record the output data in the response. Its purpose is to print the values ​​of variables and methods without the need for a conventional ‘out.print()’.

17. What is meant by Scriptlet tag in JSP?

A scripting tag is used in a Java Server Page (JSP) to execute the JAVA code to be executed.

18. What is the syntax of a declaration tag?

Here is the declaration tag syntax. <%!... декларирайте метод тук...%>

19. What is the difference between a declaration tag and a script tag in a Java Server Page (JSP)?

In JSP, the Scriptlet tag is used to declare only variables but not methods, while the Declaration tag is used to declare both variables and methods.

20. State whether the given statement is true or false?

Declaration: The scriptlet tag declaration is placed outside the _jspService() method.

False, The scriptlet tag declaration is placed in the _jspService() method.

21. What are the different types of directives present in JSP?

There are different types of directive tags in JSP. They are:

1. Turn on
2. Page and
3. taglib

22. Mention some attributes of page directive in Java Server Page (JSP).

Here are some of the page directive attributes in JSP..

1. spreads
2. session
3. info
4. import
5. buffer
6. errorPage
7. pageEncoding
8. autoFlush
9. contentType and so on

23. Explain about the contentType attribute of the page directive in Java Server Page (JSP).

contentType is one of several attributes of the page directive in a Java Server Page (JSP). Used to specify the MIME type of the HTTP response. By default, the value of the contentType attribute is set to “text/html;charset=ISO-8859-1”.

24. State whether the given statement is true or false?

Statement: Average buffer size (page directive attribute) is less than 6 Kb.

False, the average buffer size (page directive attribute) is exactly 8 Kb.

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25. What do you mean by JSTL?

The term JSTL stands for Java Standard Tag Library. It is a group of JSP tags together which makes JSP development simpler.

26. How is Java Server Page (JSP) different from Java Standard Tag Library (JSTL)?

JSTL has a collection of several tags that can be easily implemented. While JSP allows developers to create their own tags by writing code.

27. JSTL core tags used for what purposes?

JSTL is a collection of tags that can be used directly for coding purposes. They contain all the tags for different situations like iteration, conditionals, error handling, etc.

28. What is a Java Server Page (JSP) hidden object? Mention a few of them

In the general Java Server Page (JSP), implicit objects are also known as predefined objects. Here is a list of several such JSP implicit objects.

1. request
2. answer
3. outside
4. session
5. application
6. page
7. exception
8. config and so on

29. State whether the given statement is true or false?

Statement: Request and response objects are instances of java.Servlet.HTTP objects.

False, both request and response objects are instances of

javax.servlet.http.HttpServletRequest object

30. How does a Java Server Page (JSP) handle input requests?

A Java Server Page (JSP) handles input requests by using various methods such as

1. getParameter()
2. getParameterValues()
3. getParameterNames() and
4. getInputStream()

31. Which method is called to get the value of a form parameter.

We need to call the getParameter() method to get the value of a form parameter. It’s called request.getParameter().

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