Objects First with Java: A Practical Introduction Using BlueJ (6th Edition)
6th Edition
ISBN: 9780134477367
Author: David J. Barnes, Michael Kolling
Publisher: PEARSON
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Chapter 10, Problem 11E
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To find the inheritance relationship between rectangle and square.
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Sometimes things are more difficult than they first seem. -Consider this: In what kind of inheritance relationship are Rectangle and Square? What are the arguments? Discuss.
The main benefit of inheritance is reusability.
What is the main tradeoff (i.e., "cost") of having inheritance? (as compared to a "pure" ADT?)
Give an example of an inheritance hierarchy that exhibits this tradeoff. (For example, consider a BankAccount -> CheckingAccount relationship.)
In what ways do Class and Structure vary from one another? Use an example to back up your claim
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Objects First with Java: A Practical Introduction Using BlueJ (6th Edition)
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- This article discusses the phenomenon of multiple inheritance. Within the context of practise, talk about the benefits and the drawbacks.arrow_forwardExplain the purpose of inheritance. And then explain why the Circle class can inherit from the Ellipse class. This question seems pretty straight forward and I understand what inheritance is and why it is used. I am confused about the second part of the question because I know there is quite a bit of discussion about Circle and Ellipse being classed together in Python. Is it possible for the circle class to inherit from the ellipse class and why? That is what is confusing me.arrow_forwardWhen might we expect uncertainty to arise due to multiple inheritance? In what ways may we go about fixing this issue? Can you define virtual base classes for me? If so, why do we care so much about them?arrow_forward
- Create your own UML diagram — similar to the above UML diagram — for a Pet class that meets thespecification below.1. Create the fields indicated below. Use these names exactly as given for your fields. Define them inexactly this order.• name — The name of the pet, e.g., “Rufus”, “Mittens”, “Smelly”, etc.• animal — The type of pet, e.g., “dog”, “cat”, “asparagus”, etc.• age — The (integer) number of years the pet has been alive, e.g., 1, 2, 3, etc.2. Create a mutator for each of the above in the order listed. Use the standard Java naming conventionfor mutators.3. Create an accessor for each of the above in the order listed. Use the standard Java naming conventionfor accessors.Example: Suppose you are taking the question for the example Car UML above instead of your Pet UML.Don’t enter any spaces at all.When the question asks: Enter line 1:You would enter: CarWhen the question asks: Enter line 2:You would enter: -make:StringWhen the question asks: Enter line 3:You would enter:…arrow_forwardCreate your own UML diagram — similar to the below UML diagram — for a Pet class that meets thespecification below.1. Create the fields indicated below. Use these names exactly as given for your fields. Define them inexactly this order.• name — The name of the pet, e.g., “Rufus”, “Mittens”, “Smelly”, etc.• animal — The type of pet, e.g., “dog”, “cat”, “asparagus”, etc.• age — The (integer) number of years the pet has been alive, e.g., 1, 2, 3, etc.2. Create a mutator for each of the above in the order listed. Use the standard Java naming conventionfor mutators.3. Create an accessor for each of the above in the order listed. Use the standard Java naming conventionfor accessorsarrow_forwardLet's examine the many approaches of programming that are at our disposal. The question that arises next is what causes so many different models to coexist. Is it mandatory that you get them? If you could put it in your own words, that would be great.arrow_forward
- In a public inheritance, how are the base class members passed down to derived classes? Explain.arrow_forwardsolve this question using java , also do not use inheritance (override) and aaraylist, just use string and classes and object (oop).arrow_forwardDescribe some your ideas on “selective inheritance”with example.arrow_forward
- Think about a problem that you would like to solve using OOP. Your problem should require at least three classes, one inheritance (is-a relation) and one composition (has-a relation).Test your implementation from the main program. Write your codearrow_forwardA C++ Question For each of the following relations, explain whether inheritance, composition, aggregation, or something else, makes the most sense. Justify your answer in each case and be sure to specify which way around the association is. In some cases, several answers may be reasonable if appropriately justified but you should only give one for each item. a. Bee, hive. b. Aeroplane, wing. c. Sea, ship. d. Vehicle, bus. e. Elephant, dinosaur.arrow_forwardExplain the following topics in object modeling using examples to support your answer: -classes of inheritance and connectionarrow_forward
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Introduction to Classes and Objects - Part 1 (Data Structures & Algorithms #3); Author: CS Dojo;https://www.youtube.com/watch?v=8yjkWGRlUmY;License: Standard YouTube License, CC-BY