This test evaluates knowledge on Java programming, focusing on abstract classes, access modifiers, method signatures, and the importance of data abstraction.
For making composition possible
For data abstraction
For encapsulation and information hiding
For being able to use inheritance
None of the above
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Doesn't have any implementation of methods
Has abstract methods but possibly some defined methods as well
Is only accessed from the same package
Has only implemented methods
None of the above
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One
Two
Infinite
You cannot
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When you extend a class
When you implement an interface
When you extend an abstract class
When an object A has a reference to another object B, and only A has a reference to it. Also A determines lifetime of B.
When a class calls the super constructors
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