What is the Difference between DispatchAction and LookupDispatchAction ?
LookupDispatchAction is subclass of DispactAction class. The LookupDispatchAction class is used when you wants to add struts's internalization functionality in your application. Internalization means multiple languges supports application.
If your using DispatchAction Class you will not be able to apply "internalization" functionality.
DispatchAction dispatches the action based on the parameter value. Where as lookupdispatchAction which is a subclass of it. It inherits all the properties but It supports one more additional method called getmethodkey() for all those mappings.