java.io.Serializable and ActionForm

Hi, i just read that subclasses of ActionForm shout implemente Serializable. But ActionForm allready does this for my, so why must my class e.g. MyForm implemtent this Interface? I tested ObjectOutputStream with MyForm (which only extends ActionForm) all was fine... Thanks

java.io.Serializable and ActionForm

Hi, i just read that subclasses of ActionForm shout implemente Serializable. But ActionForm allready does this for my, so why must my class e.g. MyForm implemtent this Interface? I tested ObjectOutputStream with MyForm (which only extends ActionForm) all was fine... Thanks