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How to handle an exception in JSP?
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 = "http://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
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