Question

Suppose Animal is an interface that specifies a single method – speak. Now suppose the Dog class implements the Animal interface. In addition to the speak method, the Dog class also has a method called wagTail. Now consider the following code.
Animal a = new Dog();
a.wagTail();
Which of the following is true about this code?
a) It will result in a compile-time error.
b) It will result in a run-time error.
c) It will call the speak method defined in the Animal interface.
d) It will call the wagTail method defined in the Dog class.
e) none of the above are true.

Answer 1

Answer / Explanation

To properly answer this question, let us define some basic terms within the narrative of the question.

This includes:

Speak Method: This is a type of java script or programming language syntax or method. The speak method usually denoted by the symbol () is a form of of Speech combination or the combination of components of different speech or elements to form a whole speech method. it is an interface that  adds an utterance to the utterance queue and  it will be spoken when any other utterances queued before it have been spoken.

Now, referencing the definition of speak method above and relating to the the options given as an output in the codes written in the answer options,

The answer here is (a) that is it will fail to comply which is equivalent to the option of it resulting to a compile time error.