The factory classes are the ones that are created on a temporary basis to bring the interface for applying an effect on an object. This is really useful to the application as using the original object might require change in the different properties of the object. The effect is going to be on implementation on ly for little time and recreation and restyling of the object to its previous state may consume more time than just creating and destroying the duplicate for the same object. There is also an integral need for both original and effect-interlaced object to appear simultaneously. That is where factory objects find their use.