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 12E
Explanation of Solution
Given: Four classes named Person, Teacher, Student, and PhDStudent
To find:Â Legal assignment
Solution:
(a.)
The following are the legal assignments:
Person p1 = new Student();
Person p2 = new PhDStudent();
S...
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Problem B
Now we are going to use the design pattern for collecting objects. We are going to create two
classes, a class AmazonOrder that models Amazon orders and a class Item that models items
in Amazon orders.
An item has a name and a price, and the name is unique. The Item class has a constructor that
takes name and price, in that order. The class also has getters and setters for the instance
variables. This is the design pattern for managing properties of objects. The setName() method
should do nothing if the parameter is the empty string, and the setPrice() method should do
nothing if the parameter is not positive. The class also has a toString() method that returns a
string representation for the item in the format “Item[Name:iPad,Price:399.99]”.
For simplicity, we assume an Amazon order can have at most 5 items, and class
AmazonOrder has two instance variables, an array of Item with a length of 5 and an integer
numOfItems to keep track of the number of items in the…
a. Can a faculty member work in more than one department at the same time? Explain.
b. Can a faculty member work in two departments at the same time, where one department is in the college of business and other department is in the college of arts and sciences? Explain.
c. If faculty member is a superclass, what possible subclass do we have? Explain.
Consider the following scenario of a class Person. A Person class has a Name, ID, Address and has functions of change the address and profile display. (Hint: Composition is not applied)
Two classes are derived from this class person. 1) Student 2) Employee.
The student class has a course number, classes attended, year (freshman=1, sophomore=2 and so on), and functions to change course and profile display.
The employee class has a Date of joining and date of promotion.
The employee class further has two child classes 1) Faculty 2) Admin.
Faculty class has a course number, classes taught, Rank (AP, lecturer etc) and a function to display profile.
Admin class has number of projects worked on and a display profile function.
Answer the question based on this scenario.
Write main and construct objects of each class. Call class specific functions for each object to show how a function is called with each class’s object.
Subject: object oriented programming
Answer in C++
Chapter 10 Solutions
Objects First with Java: A Practical Introduction Using BlueJ (6th Edition)
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