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Given the following 3 classes Animal, Dog, and Array in 3 separate files, I compiled them and ran only the Array class with
the following results:
line 42 output: protected Animal instance variable i = 1
line 46 output: Dog element = pkgb.Dog@45a877
My Questions: 1. Why wouldn't line 48 compile without the cast when line 42 did not need one?
2. why does line 50 produce a compile error without the "//" but line 42 seems to run the
Dog initialization block without errors?
This is just to very and understand better. When I created the reference in the array to the Dog object I was implicitly downcasting. Am I correct?
Another clarification / Question So what is the function of the element I am using on line 48 to create the new Dog object?
Does that element point to a Dog or in reality to an Animal?
In other words I do not quite understand the statement on line 48 although I authored it. Please elaborate a little more for
greenhorn Edward Lawrence.
Joined: Apr 02, 2010
Just wanted to add this if I remember correctly. When compiling, the compiler thinks sees the element as an Animal and not a Dog. Am I correct?