Hi, actually I would like to know under what circumstances one should go for abstract class and interface? It's understood when multiple inheritence is required interface must be used. But are ther any other factors that will decide that whether one should make a particular class abstract or use interface. It is being assumed that the class is used for just creating a prototype( I mean the sole purpose of using abstract methods).
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When u have some default functionality to be placed some where so that the all the subclasses can use the default functionality from its super classes, and they can provide some more info,, in the subclass.
and when u r required to build subclasses which must have their specific behaviour then u can go for interface and implement it with respect to the specific subclass.
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