Question 4 2 pts What alterations, if any, would you need to make to your program...

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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