Question

Question 4 2 pts What alterations, if any, would you need to make to your program if you added a method stub, void fly(); , to your Command interface? No changes would need to be made. The fly method would need to be added to the ForwardCommand class. The fly method would need to be implemented in the Command interface. O All classes that implement the Command interface would need to add the fly method.

Answer 1

ANSWER : HERE IS THE ANSWER FOR YOUR QUESTION:

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Question 1) when we add any new method to a interface , its implementation is mandatory needed in the class that it implementing that interface .

thus , the correct option is  

d) ALL The classes that implement the class interface have to add the fly method()

Question 2)

method in a interface are always public and abstract by default . so if the programmer even forget to put public keyword, compiler would add it automatically . so the correct option is:

c) both void methodname() and public void methodname() are correct ;

Question 3)

map.get("forward") would get us a object related to forwardCommand as it is sensible logic writing to have key -value pair as name matching .

so the correct option would be:

d) A forwardCommand Object

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