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<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>
<%
int i= (int) (Math.random() * 10);
pageContext.setAttribute("signalStrength", new Integer(i), PageContext.PAGE_SCOPE);
%>
<html>
<head>
<title>The c:catch action</title>
</head>
<body>
<c:if test="${pageScope.signalStrength < 5}">
<c:set var="signalFailure" value="true" scope="page" />
</c:if>
<c:choose>
<c:when test="${pageScope.signalFailure == true}">
<h3>Exception!</h3>
Refresh the page in your web browser to try again.
</c:when>
<c:otherwise>
<h3>No Exception.</h3>
Refresh the page in your web browser to make another call.
</c:otherwise>
</c:choose>
</body>
</html>
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Download: JSTLCombineIfChooserToReportException.zip( 1,022 k)