» » JSP Jstl if else statement with mutilple conditions

  • JSTL means Java Server pages standard Tag Library.
  • JSTL is a collection of useful JSP tags to simplify the JSP development.
  • Lets see how to write  if and if else statements  in java server pages using JSTL



JSTL If condition in JSP :

  • We can use JSTL tags by providing 
  • <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

Program  #1: Write a program to how to use JSTL if condition in Java server pages


  1. <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
  2.     pageEncoding="ISO-8859-1"%>
  3. <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.or
  4. /TR/html4/loose.dtd">
  5.  
  6. <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
  7. <html>
  8. <head>
  9. <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
  10. <title>JSTL if condition</title>
  11. </head>
  12. <body>
  13.  
  14.  <c:set var="age" scope="session" value="${20}"/>
  15. <c:if test="${age > 18}">
  16.    <p>My age is: <c:out value="${age}"/><p>
  17. </c:if>
  18. </body>
  19. </html>
Output:


jstl if condition
JSTL If  else condition in JSP :
  • We use  c:when and c:otherwise tags in JSTL like if else in java

Program  #2: Write a program to how to use JSTL if  else condition in Java server pages


  1. <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
  2.     pageEncoding="ISO-8859-1"%>
  3. <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.or
  4. /TR/html4/loose.dtd">
  5.  
  6. <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
  7. <html>
  8. <head>
  9. <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
  10. <title>JSTL if else condition</title>
  11. </head>
  12. <body>
  13.  
  14.  <h1>c:when, c:otherwise, c:choose</h1>  
  15.  
  16. <c:set  var="year" value="2016" ></c:set>  
  17. <c:choose>  
  18. <c:when test="${year%4==0}">  
  19. <c:out value="leap year"></c:out>  
  20. </c:when>  
  21. <c:otherwise>  
  22. <c:out value="Not Leap year"></c:out>  
  23. </c:otherwise>  
  24. </c:choose>
  25.  
  26. </body>
  27. </html>
Output:


jstl if else statement





JSTL  multiple If  else conditions in JSP :
  • We use  c:when and c:otherwise tags in JSTL like if else if else in java server pages.
  • Lest wee how to use if else ladder and compare string in jstl  multiple if else conditions.
  • Jstl if else statement multiple conditions

Program  #3: Write a program to how to use  comparing string in JSTL multiple  if  else condition in Java server pages


  1. <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
  2.     pageEncoding="ISO-8859-1"%>
  3. <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.or
  4. /TR/html4/loose.dtd">
  5.  
  6. <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
  7. <html>
  8. <head>
  9. <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
  10. <title>JSTL multiple if else condition/ if else ladder</title>
  11. </head>
  12. <body>
  13.  
  14. <c:set  var="Day" value="Friday" ></c:set>  
  15. <c:choose>  
  16. <c:when test="${Day=='Sunday'}">  
  17. <c:out value="Its SunDay"></c:out>  
  18. </c:when> 
  19. <c:when test="${Day=='Monday'}"> 
  20. <c:out value="Its MonDay"></c:out>  
  21. </c:when>  
  22. <c:when test="${Day=='Tuesday'}"> 
  23. <c:out value="Its TuesDay"></c:out>  
  24. </c:when>  
  25. <c:when test="${Day=='Wednesday'}"> 
  26. <c:out value="Its Wednesday"></c:out>  
  27. </c:when>  
  28. <c:when test="${Day=='Thursday'}"> 
  29. <c:out value="Its ThursDay"></c:out>  
  30. </c:when>  
  31. <c:when test="${Day=='Friday'}"> 
  32. <c:out value="Its FriDay"></c:out>  
  33. </c:when>  
  34. <c:otherwise>  
  35. <c:out value="Its Saturday"></c:out>  
  36. </c:otherwise>  
  37. </c:choose>  
  38.  
  39. </body>
  40. </html>
Output:


jstl if statement multiple conditions

Instance Of Java

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