Table of Contents
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Through the include directive.Thanks to the special offer.
There is a list of the 40 most common JSP interview questions and answers for freshmen and professionals. If anyone knows of a key issue with the JSP interview that is not listed here, please post your question in the Ask a Question section.
1) What Is JSP?
Java Server Pages (JSP) technology is a server-side programming language used to create dynamic web pages in HTML (Hypertext Markup Language) format. This is an extension of a special technology servlet.
These Java servlet 2021 interview questions are often divided into two parts, the first part covers key interview questions and answers. Q1 What is a Java servlet? A Java servlet is a web component whose lifecycle is managed by a servlet container that resides on a single web server.
The JSP page is fully converted to a servlet. JSP gives you access to the entire family as well as Java APIs, including the JDBC API for accessing an enterprise database. Therefore, Java Server Pages (JSP) uses Java language syntax. JSP pages are available tohelp you with services, not servlets, because we separate design and development. This guarantees some additional features such as expression language, markup, customization, etc.
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2) What Is The Method Lifecycle For The New JSP?
Can we make both PrintWriter and ServletOutputStream in the latest Servlet? We can’t get the associated PrintWriter and ServletOutputStream instances in one best servlet method if we call both methods; getWriter(), not to mention getOutputStream() in return; We will be generating Java.
| Method | Description |
|---|---|
| public void jspInit() | Called only once, just like servlet initialization methods. |
| public void _jspService(ServletRequest request,ServletResponse) throws ServletException,IOException | Called for applications, similar to a servlet’s service() method. |
| public void jspDestroy() | Maybe it will be called once, like the destroy() method in servlet.List |
3) Explore Some Of The Benefits Of Using JSPs.
The
Ease of maintenance: JSPs are easy to maintain because we can easily separate our business logic from our sales presentation logic. Mix our business logic with public domain logicspeeches in servlet technology.
4) JSP Comment Format.
5) What Is The Difference Between A Hidden Comment And An Ability Comment?
A JSP comment is known as a hidden comment, while an HTML comment is usually called an output comment. When the user views the page’s source code using Panorama Panorama, the JSP comment is not inserted, but the HTML comment is displayed.
6) What Are JSP Game Objects?
JSP Interview Questions 1) What is JSP? Java Server Pages (JSP) technology is a server-side programming language used to create a dynamic website. 2) What are JSP lifecycle methods? Method Description public useless jspInit() Called only once, like 3) List some benefits
The JSP exposes nine implicit objects through the default process. They:
| Object | Type |
|---|---|
| 1) from | JspWriter |
| 2) Request | HttpServletRequest |
| 3) Response | HttpServletResponse |
| 4) Session | HttpSession |
| 6) config | ServletConfig |
| 5) Application | Servlet context |
| 7) Page context | Page context |
| 8) Page | Object |
| 9) Exception | Disposable |
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7) Is There Any Difference Between An Include Directive And An Include Action?
8) Is It Possible To Extend Jsp Technology?
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Yes. JSP technology is extensible, which includes developing custom actions or tags wrapped in name libraries.
9) How Do I Run A Thread-safe JSP Page? What Are The Specific Pros And Cons Of This?
You can make your JSPs thread-safe by injecting the SingleThreadModel slot into them. This is done by adding the <%@ page isThreadSafe="false" directive inside the %> of your JSP page.
10) How Can I Preventprevent Browser Caching Of My JSP Or Servlet Page Output? How?
(OR) Get Rid Of Browser Back Button Caching?
11) How Can We Count Exceptions In JSP?
There are several ways to handle exceptions: first, through the errorPage element associated with the page directive, and second, through the error-page element of each web.xml file.
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12) How Can I Move The Result To Another Page? ?
There are two ways to insert a page result:
13) How Can We Forward Your Request From The JSP Page To The Servlet?
Yes, of course! Using the “forward action” tag, but we have to specify the URL pattern with the servlet.
Move action tag
14) Can Any Of Us Use An Implicit Exception Object In Every JSP Page?
No. A executed set of exceptions can only be used on an error page that the program sets using the isErrorPage attribute of the web page directive.
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15) Why Is JSP Preferred In MVC Pattern?
JSP is almost always usedi for view in Model View Controller (MVC) pattern i.e. H he plays the role of scenery. The controller handles the phone calls, the model and the business doctrine, which in turn receives the stuff, and then that data is sent to the JSP to be propagated to the clients.
Transmission action What a day
16) Context Initialization Parameters ?
Context initialization issues are indicated by
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17) What Are The Common Range Values for The Tag?
- Page
- Request
- session
- Application
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18) What Are JSP Literals Made Of?
19) What Is For?
13) What is the difference between ServletConfig and ServletContext? The container has a ServletConfig object for each servlet, and a ServletContext object is created for each web application.
The jsp:useBean action searches the web for the presence of the specified name in addition to the object. No, if displayed, it will be created.
Better performance combined with quality, because JSP is a direction, not a product. JSP book pages can be used in conjunction with servlets. JSP is an integral part of J2EE, a comprehensive platform for enterprise applications. JSP softwareHolds all dynamic content based on scenarios and elements.
