📄 replace.jsp
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<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
<html>
<head>
<title>JSTL Functions • Replace</title>
</head>
<body bgcolor="#FFFFFF">
<h2>Replace</h2>
<c:set var="s1" value="There is a castle on a cloud"/>
<c:set var="s2" value="one - two - three - one - two - three - one - two - three"/>
<h4>fn:replace</h4>
<table cellpadding="5" border="1">
<tr>
<th align="left">Input String</th>
<th>Substring Before</th>
<th>Substring After</th>
<th>Result</th>
</tr>
<tr>
<td>${s1}</td>
<td>e</td>
<td>*</td>
<td>${fn:replace(s1, "e", "*")}</td>
</tr>
<tr>
<td>${s2}</td>
<td>-</td>
<td>•</td>
<td>${fn:replace(s2, "-", "•")}</td>
</tr>
<tr>
<td>${s2}</td>
<td>two</td>
<td>empty</td>
<td>${fn:replace(s2, "two", "")}</td>
</tr>
<tr>
<td>${s2}</td>
<td>empty string</td>
<td>one</td>
<td>${fn:replace(s2, "", "one")}</td>
</tr>
<tr>
<td>null</td>
<td>one</td>
<td>two</td>
<td> ${fn:replace(undefined, "one", "two")}</td>
</tr>
</table>
</body>
</html>
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