There are 4 main types of JSP tags, Directive tag: This type of tag is used to import packages into the current JSP application.
- Syntax <%@ directive attribute=”value” %> ...
- Example <%@page language=”java” session=”true” %> <%@ include file=”/title.jsp”%>
- Declaration tag: This tag is used to declare variables or methods to be used in the Java code of the JSP. ...
- Example <%! ...
- Syntax <% java code %>
JSP tags are an essential part of Java Server Pages , a server-side technology. Tags in JSP create a container for Java code, insulating and providing separation of dynamic content from static design elements in your site.
| Scripting Element Example | Scriptlet <% scriplets %> | Expression <%= expression %> |
|---|
Now in JSTL Core Library, there are approximately 15 tags . Let’s quickly go through them one by one. Catch: this tag is used to handle any exception thrown.
Where is JSP used?
- It stands for Java Server Pages.
- It is a server side technology.
- It is used for creating web application.
- It is used to create dynamic web content.
- In this JSP tags are used to insert JAVA code into HTML pages.
- It is an advanced version of Servlet Technology.
What is a JSP scriptlet?
A JSP scriptlet is used to contain any code fragment that is valid for the scripting language used in a page .
What is the difference between JSP and servlets?
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. ... JSP are HTML-based codes. Servlets are harder to code, as here, the HTML codes are written in Java.
What is the syntax of scriptlet tag?
A scriptlet tag is used to execute java source code in JSP. Syntax is as follows: <% java source code %>
What is a Java tag?
An empty interface is known as tag or marker interface. For example Serializable , EventListener , Remote(java. ... Basically Tag interfaces are meaningful to the JVM (Java virtual machine). You can also create your own tag interfaces to segregate and categorize your code. It would improve the readability of your code.
Which is not a directive?
9. Which is not a directive? Explanation: Export is not a directive.
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 requests for further processing. In short, a Servlet is HTML in Java, while a JSP is Java in HTML.
What is JSP and its advantages?
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. ... Performance and scalability of JSP are very good because JSP allows embedding of dynamic elements in HTML pages.
