JSTL c:catch Example
JSTL c:catch Example explains about How to use c:catch tag inside a JSTL Page for catching an exception.
Consider an example, where you need to catch an exception and you need to show formatted error message to user in a friendly manner, In that use case you can use JSTL c:catch
c:catch Tag is available as a part of JSTL core tags, c:catch Tag captures any throwable exceptions that happens on the body of a page
You can see the below example demonstrating the usage JSTL c:catch Example inside JSTL, Here we are capturing java.lang.NullPointerException and catching using c:catch Tag.
Required Libraries
JSTL c:catch Example
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> <html> <head> <title>JSTL c:catch Example</title> </head> <body> <c:catch var="CatchNullPointerException"> <% String str = null; str.trim(); %> </c:catch> <c:if test="${CatchNullPointerException != null}"> <p> Exception is : ${CatchNullPointerException} <br /> </p> </c:if> </body> </html>
Output
Exception is : java.lang.NullPointerException