What is the use of JSTL tags in JSP?

What is the use of JSTL tags in JSP?

The JavaServer Pages Standard Tag Library (JSTL) is a collection of useful JSP tags which encapsulates the core functionality common to many JSP applications. JSTL has support for common, structural tasks such as iteration and conditionals, tags for manipulating XML documents, internationalization tags, and SQL tags.

How do I use JSTL?

To use JSTL, you must install JSTL into Tomcat. JSTL can be obtained from the same source as Tomcat. The main URL for JSTL is http://java.sun.com/products/jsp/jstl/. To use JSTL, you must unzip the distribution files and install them into the correct locations within Tomcat.

What Jstl means?

JavaServer Pages Standard Tag Library

How many JSTL tags are there?

five tag libraries

Is PHP better than JSP?

JSP: JSP stands for Java Server Pages, JSP is a server-side technology that makes a difference in making an energetic web application….Features of PHP:

JSP	PHP
Common to JSPs since they are changed over to Java classes.	Way less characteristic than JSP.

Which of the following is disadvantage of JSTL tag?

Disadvantages of JSTL Large complex JSP pages make use of JSTL tag libraries which exceeds class size limitation. Because size of java class is limited. JSTL is not so flexible and not as extensive as JSP Scriptlet. The JSTL is not nearly as evolved as Java itself.

What is C in JSP?

The JSTL core tag provide variable support, URL management, flow control, etc. The URL for the core tag is http://java.sun.com/jsp/jstl/core. The prefix of core tag is c. The XML tags provide flow control, transformation, etc. The URL for the XML tags is http://java.sun.com/jsp/jstl/xml and prefix is x.

Which one is the correct order of phases in JSP life cycle?

Which one is the correct order of phases in JSP life cycle? Explanation: The correct order is Compilation, Initialization, Execution, Cleanup.

What is JSP useBean?

The jsp:useBean action tag is used to locate or instantiate a bean class. If bean object of the Bean class is already created, it doesn’t create the bean depending on the scope. But if object of bean is not created, it instantiates the bean.

What are the 3 tags used in JSP bean development?

jsp:setProperty and jsp:getProperty action tags

• jsp:setProperty and jsp:getProperty action tags.
• Syntax of jsp:setProperty action tag.
• Example of jsp:setProperty.
• jsp:getProperty action tag.
• Syntax of jsp:getProperty action tag.
• Example of jsp:getProperty action tag.
• Example of bean development in JSP.

What is mandatory in JSP useBean tag?

D – id, property. Q 2 – Which of the following attributes are mandatory in :setProperty /> tag? A – name, property. B – type, id. C – name, type.

What is the default scope of JSP bean?

The default scope for JSP objects created using tag is page. JSP implicit objects out, exception, response, pageContext, config and page have ‘page’ scope. A JSP object created using the ‘request’ scope can be accessed from any pages that serves that request. More than one page can serve a single request.

What is requestScope in JSP?

You use requestScope when you absoluetely want your object to come from the request, and not from the page, session or application scope. Inded, using ${name} will search for a name attribute in the page, then in the request, then in the session, then in the application.

Which is not a JSP directive?

Explanation: command directive is not a directive in JSP.

Which is least visibility scope for Java Bean in JSP?

A Page is least visbility scope for java bean in jsp.

What JSP is basically used today?

A) JSP stands for Java Server Pages, it is a server side technology which is used for creating dynamic web pages. It is the extension of servlets.

Which is the correct way to write a JSP directive inside a JSP page?

JSP Taglib Directive Here “uri” attribute is a unique identifier in tag library descriptor and “prefix” attribute is a tag name. Example: <%@ page language=”java” contentType=”text/html; charset=ISO-8859-1″ pageEncoding=”ISO-8859-1″%>

Which of the following is not a scope in JSP Usebean tag?

24. E Global is not a valid scope for java bean in Jsp.

What is Scriptlet tag in JSP?

Scriptlet tag allows to write Java code into JSP file. For each request of the client, service method of the JSP gets invoked hence the code inside the Scriptlet executes for every request. A Scriptlet contains java code that is executed every time JSP is invoked.

How do I access JavaBeans in JSP?

In short, to use a Bean in a JSP page you should:

1. Create a Java Bean.
2. Create a jsp page, using the <%code fragment%> scriptlet.
3. Use the useBean action to declare the JavaBean for use in the JSP page.
4. Use the getProperty action to access get methods and setProperty action to access set methods of the bean.

Which two interfaces does the javax servlet JSP package have?

javax. servlet. jsp package has two interfaces and classes.

What is the difference between servlet and JSP?

Servlets are faster as compared to JSP, as they have a short response time. JSP is slower than Servlets, as the first step in the JSP lifecycle is the conversion of JSP to Java code and then the compilation of the code. Servlets are Java-based codes. JSP are HTML-based codes.

What is JSP API?

JSP API is a set of classes and interfaces that can be used to make a JSP page. These classes and interfaces are contained in the javax servlet. jsp packages.

What is JSP in advanced Java?

It stands for Java Server Pages. It is a server side technology. In this JSP tags are used to insert JAVA code into HTML pages. It is an advanced version of Servlet Technology. It is a Web based technology helps us to create dynamic and platform independent web pages.

Is JSP a front end?

JSP is generally used in the front end or GUI layer to create views, while Servlet is mostly used in the backend as Controller in MVC pattern whose job is to capture and redirect HTTP request for further processing. In short, a Servlet is HTML in Java, while a JSP is Java in HTML.

What is JSP life cycle?

A JSP life cycle is defined as the process from its creation till the destruction. This is similar to a servlet life cycle with an additional step which is required to compile a JSP into servlet.

What is JSP and its advantages?

Advantages of JSP The advantage of JSP is that the programming language used is JAVA, which is a dynamic language and easily portable to other operating systems. It is very much convenient to modify the regular HTML. We can write the servlet code into the JSP.

What is the purpose of JSP?

JavaServer Pages (JSP) is a Java standard technology that enables you to write dynamic, data-driven pages for your Java web applications. JSP is built on top of the Java Servlet specification. The two technologies typically work together, especially in older Java web applications.

What are the disadvantages of JSP?

Disadvantages of JSP

• It is hard to trace JSP pages error because JSP pages are translated to servlet.
• As JSP output is HTML, it is not rich in features.
• It is very hard to debug or trace errors because JSP pages are first translated into servlets before the compilation process.
• Database connectivity is not easy.

What is JSP explain with an example?

JavaServer Page (JSP) is Java’s answer to the popular Microsoft’s Active Server Pages (ASP). JSP, like ASP, provides a simplified and fast mean to generate dynamic web contents. It allows you to mix static HTML with dynamically generated HTML – in the way that the business logic and the presentation are well separated.