posted 17 years ago
Here are some possible reasons:
1- A simple spelling error. Are you 100% sure that the type you specified in the <form-bean> tag exists and is spelled correctly including the package name?
2-Failure to compile the class. Maybe the .java file exists, but does the .class file? Is it in WEB-INF/classes?
3-No public constructor. Have you overriden or made non-public the default no-arguments constructor for the bean?