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What’s class cast exception?
By 
Ozzzy
on May 28, 2021
Ozzzy
on May 28, 2021
lass cast excep: you are attempting to cast one class to another.
what is the precondition to cast a class? IS A relation.
So when we have a class extending another class.
as long as there is IS A relation between classes you can cast.
if reference type is parent, we can downcast it to the child reference type
RemoteWebDriver is parent of ChromeDriver and FireFoxDriver: // Polymorphism
RemoteWebDriver driver1 = new ChromeDriver(); // upcasting implicitly done
FirefoxDriver driver2 = (FireFoxDriver) driver1; // downcasting
Class cast exceptions means there is no IS A relation // downcasting
you need to have the actual object in order to have the instance.
0
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