In this tutorial you will learn about the JSTL replace function.
JSTL fn replace Example
In this tutorial you will learn about the JSTL replace function.
This function replaces a string with the other string. It replaces all occurrences of a string.
Syntax :
String replace(String, String, String)
Example :
Here I am giving a simple example which will demonstrate you about how to use the JSTL fn:replace() functions. In this example I have created a JSP page into which I have created a variable of type String and associate some values to them that will be used in to replace some of the values. Then used the <c:set> tag of JSTL core tag library to assigned the above variables into it and also in the next line I have used this tag to use the fn:replace() function to replace the string and stored them to a variable to display the result. In the last statement I have tried to display the stored replaced string.
JstlFnReplace.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>JSTL fn:replace Example</title>
</head>
<body>
<%
String str = "a, b, a, d, a";
%>
<c:set var="str1" value="<%=str %>"/>
<c:set var="replacedString" value="${fn:replace(str1, 'a', 'c')}" />
String ("${str1}") after replacing : ${replacedString}
</body>
</html>
How to run this example
Here I am using an IDE Eclipse so I am giving the process of executing this example in perspective of Eclipse. Before executing this example you will have needed to add the following jar files :
- jstl.jar
- standard.jar
After adding of these jar files you may execute your program in the following ways :
- Select JstlFnReplace.jsp file of your project in Project Explorer -> RightClick -> Run As -> Run On Server -> Choose your server -> Finish.
- On the Eclipse Editor go to your JstlFnReplace.jsp -> RightClick -> Run As -> Run On Server -> Choose your server -> Finish.
- Go to Run button look at the toolbar in green color and click -> Choose your server -> Finish.
- A simplest way to execute the example in Eclipse is to use the CTRL+F11 key -> Run On Server -> Choose your server -> Finish
NOTE : In all of the above execution processes you may start the server first and stop the server each time after the execution if not, each time you will may prompted to a dialog box to Restart the server in Eclipse.
Output :
When you will execute the above JSP page you will get the output on your eclipse browser as follows :
[ 0 ] Comments