Answer the following questions: a. Is fl instanceof Fruit? b. Is fl instanceof Orange? c. Is fl instanceof Apple? d. Is fl instanceof GoldenDelicious? e. Is fl instanceof McIntosh? f. Is ol instanceof Orange? g. Is orange instanceof Fruit? h. Is ol instanceof Apple? i. Suppose the method makeAppleCider is defined in the Apple class. Can fl invoke this method? Can ol invoke this method? j. Suppose the method makeOrangeJuice is defined in the Orange class. Can ol invoke this method? Can fl invoke this method? k. Is the statement Orange p = new Apple() legal? 1. Is the statement McIntosh p = new Apple() legal? m. Is the statement Apple p = new McIntosh() legal?

Answer the following questions: a. Is fl instanceof Fruit? b. Is fl instanceof Orange? c. Is fl instanceof Apple? d. Is fl instanceof GoldenDelicious? e. Is fl instanceof McIntosh? f. Is ol instanceof Orange? g. Is orange instanceof Fruit? h. Is ol instanceof Apple? i. Suppose the method makeAppleCider is defined in the Apple class. Can fl invoke this method? Can ol invoke this method? j. Suppose the method makeOrangeJuice is defined in the Orange class. Can ol invoke this method? Can fl invoke this method? k. Is the statement Orange p = new Apple() legal? 1. Is the statement McIntosh p = new Apple() legal? m. Is the statement Apple p = new McIntosh() legal?

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Question

Suppose that Fruit, Apple, Orange, GoldenDelicious, and McIntosh are defined
in the following inheritance hierarchy:
Fruit
Apple
Orange
GoldenDelicious
McIntosh
Assume that the following code is given:
Fruit fl = new GoldenDelicious();
Orange ol = new Orange();
Answer the following questions:
a. Is fl instanceof Fruit?
b. Is fl instanceof Orange?
c. Is fl instanceof Apple?
d. Is fl instanceof GoldenDelicious?
e. Is fl instanceof McIntosh?
f. Is ol instanceof Orange?
g. Is orange instanceof Fruit?
h. Is ol instanceof Apple?
i. Suppose the method makeAppleCider is defined in the Apple class. Can
fl invoke this method? Can ol invoke this method?
j. Suppose the method makeOrangeJuice is defined in the Orange class.
Can ol invoke this method? Can fl invoke this method?
k. Is the statement Orange p = new Apple() legal?
1. Is the statement McIntosh p = new Apple() legal?
m. Is the statement Apple p = new McIntosh() legal?

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