"what is upcasting" Code Answer's
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what is upcasting
Obedient Ocelot
on Jan 05, 2021
Upcasting is casting a subtype to a supertype,
going up in the inheritance tree.
It is done implicitly
in order to use method available on any
interface/class, the object should be of
same class or of class implementing the interface.
WebDriver driver = new ChromeDriver();
or
TakeScreenShot ts = new ChromeDriver();upcasting vs downcasting in java
Obedient Ocelot
on Jan 05, 2021
Upcasting is casting a subtype to a supertype,
going up in the inheritance tree.
It is done implicitly
in order to use method available on any
interface/class, the object should be of
same class or of class implementing the interface.
WebDriver driver = new ChromeDriver();
or
TakeScreenShot ts = new ChromeDriver();
Downcasting is casting to a subtype,
going down in the inheritance tree.
It is done to access sub class features.
It has to be done manually
(TakeScreenShot)driver).takeScreenShot();
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