about ninety percent of the time, this exception happens because of a spelling error, and this appears to be no exception.
For your form bean you define the package as com.strutsExample.formbean for your action class you define the package as com.strutsexample.action. I suspect that due to this inconsistency, the package name for your form bean is spelled wrong, or at least has the wrong case. Shouldn't it be com.strutsexample.formbean ? (with lower case "e")