Problem accessing exception object in jsp error page - Apache Tomcat 5.0.25

Hi all,
I'm thoroughly confused and need some help. I've deployed a very simple web application in Apache Tomcat 5.0.25 to test exception handling - errortest.jsp and error.jsp. errortest.jsp throws a divide by zero exception if executed with default values in text fields.
When I put the directive IsErrorPage="true" in error.jsp i get a HTTP 500 error when error.jsp is accessed. If I remove it error.jsp is displayed but I cant access the exception object - if I try to I get an exception below:
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 5 in the jsp file: /error.jsp
Generated servlet error:
[javac] Compiling 1 source file
E:\Apache Software Foundation\Tomcat 5.0\work\Catalina\localhost\mywebapp\org\apache\jsp\error_jsp.java:46: cannot resolve symbol
symbol : variable exception
location: class org.apache.jsp.error_jsp
out.print(exception.getMessage());
^
1 error
Below is the code for the two jsp pages:
errortest.jsp:
<%@ page errorPage="error.jsp" %>
<html>
<head><title>Error test</title></head>
<body>
     <form action="errortest.jsp" method="post">
     Enter first number:<input type="text" name="first" value="5"/><br>
     Enter second number:<input type="text" name="second" value="0"/><br>
     <input type="submit"/>
     </form>
     <%
     if (request.getMethod().equals("POST")) {
          int first = Integer.parseInt( request.getParameter( "first" ) );
          int second = Integer.parseInt( request.getParameter( "second" ) );
          int answer = first/second;
     %>
</body>
</html>
NB: I am able to catch and display the exception if I use a try/catch block around the division as shown below.
try {
int answer = first/second;
} catch( Exception e) {
e.printStackTrace( new PrintWriter(out) );
error.jsp (first draft)
NB: HTTP 500 error occurs when directive "isErrorPage" is added:
<%@ page isErrorPage="true" %>
<html>
<head><title>Error Page</title></head>
<body>
</body>
</html>
error.jsp (second draft)
NB: directive is removed but exception thrown when implicit exception object is accessed. error.jsp displays if exception object is not accessed:
<%@ page %>
<html>
<head><title>Error Page</title></head>
<body>
<%=exception.getMessage()%>
</body>
</html>
Web server specs:
Apache Tomcat 5.0.25
Machine specs:
Windows XP Pro
Java environments:
j2sdk1.4.2_03
J2EE 1.4

This works for me:
throwError.jsp
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<%@ page language="java" errorPage="/error.jsp"
contentType="text/html; charset=utf-8" %>
<html>
<head>
<title>Throw Exception</title>
</head>
<body>
Throwing exception....
<%
// throw ArithmeticException
int badInt = 12/0;
%>
</body>
</html>
error.jsp
<%@ page language="java" isErrorPage="true" %>
<head><title>Doh!</title></head>
An Error has occurred in this application.
<% if (exception != null) { %>
<pre><% exception.printStackTrace(new java.io.PrintWriter(out)); %></pre>
<% } else { %>
Please check your log files for further information.
<% } %>

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A great one I hug and grateful for the attention!
Message was edited by:
tarssa
Message was edited by:
tarssa
Message was edited by:
tarssa

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