Downcasting

Question

If we dont downcasting the object and recall the method that exist in superclass and override in subclass which one is our output?(superclass method OR subclass method)

Answer 1

Hello Amirhossein Zamanzade

It calls the subclass method.

Imagine you have a super class Mom and a sub class Kid.
Let's say Kid has two methods, one own funOwn() and own inherited from Mom but overriden funOverride()

The object is from type Kid but treated as Mom:

Mom mo = new Kid();

mo.funOwn()
-> it will not find this method because Mom has not such a method

mo.funOverride()
-> Mom has such a method, but Kid overrides it
-> Kid's method is invoked

Let's say Mom has also an own method: funMom()

mo.funMom();

-> Mom has such a method, but Kid does not override it
-> Mom's method is invoked.

I hope this helps you.

Answer 2

Here is a code where you can see it:

https://code.sololearn.com/cvaj8l2KGrzd/?ref=app

Btw: when you down cast mo to Kid, than it is just a normal object from type Kid.