JSP exception implicit object

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JSP exception implicit object is an instance of javax.servlet.jsp.JspException. This object is used in exception handling to print the error message. But it can only be used on that jsp page on which the isErrorPage attribute is true.

 

Example:

welcome.jsp

<html>
    <head>
        <title>Exception handling example</title>
    </head>
    <body> 
        <%	
            out.print(10/0); 
        %>
    </body>
</html>

 

errorPage.jsp

<%@ page isErrorPage="true" %>
 
<html>
    <head>
        <title>error page</title>
    </head>
    <body> 
        Occurred exception is: <%= exception %>		
    </body>
</html>

 

web.xml

<web-app>
 
  <error-page>  
  	<exception-type>java.lang.Exception</exception-type>  
  	<location>/error.jsp</location>  
  </error-page> 
 
  <welcome-file-list>
    <welcome-file>welcome.jsp</welcome-file>
  </welcome-file-list>
</web-app>