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 9E
Program Plan Intro
To order the given items into an inheritance hierarchy.
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Chapter 10 Solutions
Objects First with Java: A Practical Introduction Using BlueJ (6th Edition)
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- Q# In the company example, a supervisor has a supervisee. This “has-a” relationship is called: Group of answer choices 1. parent 2. composition 3. extending 3. inheritancearrow_forwardDefintion: What is an Inheritance, Anyway?arrow_forwardInheritance makes it more difficult to design object class tests. Explain.arrow_forward
- Could (or should) inheritance be used to create an inheritance relationship (super-, sub-, or sibling class) between a character in the game and an item?arrow_forwardUsing polymorphism and object-oriented programming Design an Elevator simulation. The simulation have 4 different types of elevators and passengers. There are 4 types of passengers in the system:Standard: This is the most common type of passenger and has a request percentage of 70%. Standard passengers have no special requirements.VIP: This type of passenger has a request percentage of 10%. VIP passengers are given priority and are more likely to be picked up by express elevators.Freight: This type of passenger has a request percentage of 15%. Freight passengers have large items that need to be transported and are more likely to be picked up by freight elevators.Glass: This type of passenger has a request percentage of 5%. Glass passengers have fragile items that need to be transported and are more likely to be picked up by glass elevators. There are 4 types of elevators in the system:StandardElevator: This is the most common type of elevator and has a request percentage of 70%.…arrow_forwardDraw an inheritance hierarchy: apple, ice cream, bread, fruit, food item, cereal, orange, dessert, chocolate par, and baguette. ( BlueJ)arrow_forward
- 3.How many abstract classes can be used in multilevel inheritance? i Only 1 ii Only 2 iii At least one less than number of levels iv Can’t be usedarrow_forwardA high value of Depth of Inheritance Tree (DIET) for a class indicates that? The class reusability is high The class is easy to test The class is easy to maintain The class is easy to understandarrow_forwardWhen creatinga class using inheritance the class that is a more specific version of the class it inherits from is referred to as the class and the class from which it is inheriting from is referred to as the class. Write your answer here.arrow_forward
- Encapsulation, polymorphism, and inheritance may all be defined in your own terms.arrow_forwardA base class is. A class that is at the bottom of the inheritance hierarchy. A class that has more than one class derived from it. A class that inherits from another class A class that is inherited by another class, and thus is included in that class. O O O Oarrow_forwardStudent class needs to add one variable (count) that is supposed to be incremented by one every time an object from class Student is instantiated. Explain how this can be achieved.arrow_forward
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