What is wide casting and Narrow casting

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Accepted Answer

Assigning coping the instance of super class to the sub class instance is called Widening Cast

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Both narrow and wide casting are related to inheritance. In narrow casting, you assing a runtime object of subclass to runtime object of superclass.

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Both narrow and wide casting are related to inheritance. In Narrow casting, you assign a runtime object of subclass to runtime object of superclass. By this assignment, you can access your subclass by using runtime object of your superclass.

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Accepted Answer

Both narrow and wide casting are related to inheritance. In Narrow casting, you assign a runtime object of subclass to runtime object of superclass. By this assignment, you can access your subclass by using runtime object of your superclass.

Accepted Answer

Both narrow and wide casting are related to inheritance. In Narrow casting, you assign a runtime object of subclass to runtime object of superclass. By this assignment, you can access your subclass by using runtime object of your superclass.

Accepted Answer

The wide casting ,an instance of the superclass is assigned to the instance of the subclass.As we are switching to a more specific view from a less specific view it is called wide casting.

In narrow casting,an instance of the subclass is assigned to reference of the superclass.As we are switching from a more specific view to low specific view ,it is called as narrow casting.

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the subclasses which inherit from the parent class would usually have more componance than the parents class, hence sub classes are wide & other hand the parentclasses have a smaller number of components , hence the parent classes are narrow

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Wide casting : This concept will be used when super class is Inherited and redefined by sub class.suppises sub class has one inherited method (x)from the super Class and one new method(y). If sub class reference is assigned to super class then it will be called as wide casting (super class =sub class), since super class is pointing to more object. Remember vice versa is not a narrow casting (sub class =sub class), since super class is pointing to more objects. Remember vice versa is not a narrow casting (sub class =super class) because sub class so there is no need of doing this Note :Even if super class has sub object reference it cannot access Narrow casting :To get the original super class reference back we need to create a new object (obj)3)with super class reference. After that assin the reference of this object to super class will behave in same way as it was earlier. This will be called a as narrow casting is used only when we use wide casting

Accepted Answer

Wide Casting : This concept will be used when super class is Inherited and redefined by Sub class. Supposes Sub class has one inherited method(x) from the super class and one new method(y). If sub class reference is assigned to super class then it will be called as Wide casting(super class = sub class ), Since super class is pointing to more objects. Remember vice versa is not a narrow casting(Sub class = super class) because sub class already have a inherit method of super class so there is no need of doing this
Note : Even if super class has sub object reference it cannot access the newly created method of sub class
Narrow Casting : To get the original super class reference back we need to create a new object(obj3) with super class reference. After that assign the reference of this object to super class object. Then again the super class will behave in a same way as it was earlier. This will be called as narrow casting(super class ?= obj 3), Since super class object is now pointing to less methods now.
Note : 1. Narrow casting is used only when we use wide casting

What is wide casting and Narrow casting

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