I define a static inner class inside my JSP, I create an instance of it and
then I keep the resulting object as a session attribute. When getting the
attribute again I will get a ClassCastException when downcasting to my inner
class. Is this a bug or standard behaviour?
Thanks,
Ernesto García
<html>
<%!
private static class MyInnerClass {
private int number;
public MyInnerClass(int number) { this.number = number; }
public void increment() { this.number++; }
public String toString() { return Integer.toString(number); }
}
%>
<%
Object instanceObj = session.getAttribute("instance");
if (instanceObj == null)
session.setAttribute("instance", new MyInnerClass(1000));
else {
// Uncomment the following line to get ClassCastException:
//MyInnerClass instance = (MyInnerClass)instanceObj;
//instance.increment();
%>
<p>instanceObj.getClass() = <%= instanceObj.getClass() %>
<p>instanceObj = <%= instanceObj %>
<%
}
%>
</html>
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