JSP Declaration Tag Example





Hey guys in this article, you will learn about the JSP Declaration Tag with easy to understand examples

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Overview


  • JSP Expressions allows us to include Java code inside the JSP file.
  • JSP will process the Java code on the server and return the HTML content
  • JSP Declaration allows us to declare a method and call those methods from the same JSP page
Element Syntax
JSP Expression <%= //Java code %>
JSP Scriptlet <% //Java code %>
JSP Declaration <%! //Java code %>

Complete Example


Follow the below steps to understand the complete example

Create a Project


You can check the following post to create a new Dynamic We Project

Create a JSP file


Create JSPDeclaration.jsp file under WebContent and add the following content

<%@page import="java.util.Date"%>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>

	<%!
		boolean isEven(int number) {
			if(number % 2 == 0) {
				return true;
			}else {
				return false;
			}
		}
	%>
	
	<p>The number 6 is: <%= isEven(6) ? "Even" : "Odd"  %></p>
	
</body>
</html>

Run the file


Right click on the File, choose Run As, choose Run on Server. It will open in a default web browser, you will see the following content
00-10

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About the author

Bushan Sirgur

Hey guys, I am Bushan Sirgur from Banglore, India. Currently, I am working as an Associate project in an IT company.

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