c:choose Action Tag

This section describes the c:choose action tag in the JSTL Core library. c:choose allows you to specify multiple sections of JSP codes and let the JSP container to process one of them based on specified conditions.

The <c:choose> action tag allows you to specify multiple sections of JSP codes with different conditions for different sections. The JSP container will process a JSP code section who's condition is evaluated to "true". Syntax of the <c:choose> action tag is:

<c:choose>
 <c:when test="condition">
  body
 </c:when>
 <c:when test="condition">
  body
 </c:when>
 ...
 <c:otherwise>
  body
 </c:otherwise>
</c:choose>

Note that:

The <c:choose> action tag behaves like a Java "if ... then ... else" statement.

Last update: 2012.

Table of Contents

 About This Book

 JSP (JavaServer Pages) Overview

 Tomcat 7 Installation on Windows Systems

 JSP Scripting Elements

 Java Servlet Introduction

 JSP Implicit Objects

 Syntax of JSP Pages and JSP Documents

 JSP Application Session

 Managing Cookies in JSP Pages

 JavaBean Objects and "useBean" Action Elements

 Managing HTTP Response Header Lines

 Non-ASCII Characters Support in JSP Pages

 Performance of JSP Pages

 EL (Expression Language)

 Overview of JSTL (JSP Standard Tag Libraries)

JSTL Core Library

 What Is JSTL Core Library?

 c:out Action Tag

 c:out Action Tag with EL Expressions

 c:set Action Tag

 c:if Action Tag

c:choose Action Tag

 c:forEach Action Tag

 c:forTokens Action Tag

 Example - Dumping EL Implicit Objects

 Example - Calculating Prime Numbers

 JSP Custom Tags

 JSP Java Tag Interface

 Custom Tag Attributes

 Multiple Tags Working Together

 File Upload Test Application

 Outdated Tutorials

 References

 PDF Printing Version