JSP Interview Questions and Answers

JSP Interview Questions and Answers

Java server pages (JSP) is a server side technology which is used to create web application.JSP consists of HTML and JSP tags. The JSP pages are easier to maintain than servlet because we can separate designing and development. It provides additional features like expression language,   tags, etc. It access to the family Java APIs and JDBC API to access enterprise database.

Here are some key features and concepts related to JSP:

  1. Expression Language (EL): JSP introduced the Expression Language, which provides a simplified syntax for accessing and manipulating data stored in JavaBeans components. EL enables dynamic content generation within JSP pages.
  2. Standard Tag Library (JSTL): JSTL is a set of custom tags that simplify common tasks in JSP, such as iteration, conditional processing, and manipulation of XML data.
  3. JavaServer Pages Standard Tag Library (JSP Standard Tag Library or JSTL): JSTL provides a collection of tags for common web development tasks, such as iteration, conditional processing, database access, and XML manipulation. It allows for cleaner and more structured code in JSP pages.
  4. Tag Files: JSP tag files provide a way to create reusable components or custom tags in JSP. They allow encapsulation of complex functionality and can be included in JSP pages using a simplified syntax.
  5. Unified Expression Language (UEL): JSP 2.1 introduced the Unified Expression Language, which unifies the expression languages of various Java EE technologies, including JSP, JavaServer Faces (JSF), and JavaServer Pages Standard Tag Library (JSTL).

What is JSP and why do we need it?

What are the life-cycle methods for a Jsp?

What is difference between hide comment and output comment?

What are different types of comments in JSP?

What are JSP implicit objects?

Which implicit object is not available in normal JSP pages?

Why use of scripting elements in JSP is discouraged?

How can we handle the exceptions in JSP?

How is JSP used in the MVC model?

What are the different scope values for the <jsp:useBean> tag?

What is the difference between ServletContext and PageContext?

What is EL in JSP?

What is basic differences between the JSP custom tags and java beans?

What is JSTL?

What are the types of JSTL tags?

What is JSP Custom Tag and what are it’s components?

Can we use JavaScript with JSP Pages?

What is difference between JspWriter and Servlet PrintWriter?