The <c:catch> tag catches any Throwable that occurs in its body and optionally exposes it. It is used for error handling and to deal more gracefully with the problem.
Attribute
The <c:catch> tag has the following attributes −
| Attribute | Description | Required | Default |
|---|---|---|---|
| var | The name of the variable to hold the java.lang.Throwable if thrown by elements in the body. | No | None |
Example
<%@ taglib uri = "https://java.sun.com/jsp/jstl/core" prefix = "c" %>
<html>
<head>
<title><c:catch> Tag Example</title>
</head>
<body>
<c:catch var ="catchException">
<% int x = 5/0;%>
</c:catch>
<c:if test = "${catchException != null}">
<p>The exception is : ${catchException} <br />
There is an exception: ${catchException.message}</p>
</c:if>
</body>
</html>The above code will generate the following result −
The exception is : java.lang.ArithmaticException: / by zero There is an exception: / by zero