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JAVA CERTIFICATION QUESTION: Quiz yourself: Using subclasses and covariant return types

· java,ocp

When overloading a Java method, be careful to specify the appropriate return types.

Given the following two classes and the task of creating a subclass of BirdsFarm:


Which of the following methods will be allowed in the new class? Choose one.


A. public List getAllBirds() { /* ... */ }


B. public List getAllBirds() { /* ... */ }


C. public ArrayList getAllBirds() { /* ... */ }


D. public ArrayList getAllBirds() { /* ... */ }







·ꓛ uoᴉʇdo sᴉ ɹǝʍsuɐ ʇɔǝɹɹoɔ ǝɥꓕ :uoᴉsnๅɔuoꓛ


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