Absolute Java (6th Edition)
6th Edition
ISBN: 9780134041674
Author: Walter Savitch, Kenrick Mock
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 7, Problem 4PP
Define a class called Administrator, which is a derived class of the class SalariedEmployee in Display 7.5. You are to supply the following additional instance variables and methods:
An instance variable of type String that contains the administrator's title (such
as "Director" or "Vice President").
An instance variable of type String that contains the administrator's area of responsibility (such as "Production", "Accounting", or "Personnel").
An instance variable of type String that contains the name of this administrator's immediate supervisor.
Suitable constructors, and suitable accessor and mutator methods.
A method for reading in an administrator's data from the keyboard.
Override the definitions for the methods equals and tostring so they are appropriate to the class Administrator.
Also, write a suitable test
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
In the board game Scrabble, each tile contains a letter, which is used to spell words in rows and columns, and a score, which is used to determine the value of words. The point of this exercise is to practice the mechanical part of creating a new class definition:
Write a definition for a class named Tile that represents Scrabble tiles. The instance variables should be a character named "letter" and an integer named "value".
In the board game Scrabble, each tile contains a letter, which is used to spell words in rows and columns, and a score, which is used to determine the value of words. The point of this exercise is to practice the mechanical part of creating a new class definition:
Write a definition for a class named Tile that represents Scrabble tiles. The instance variables should be a character named "letter" and an integer named "value".
Write a constructor that takes parameters named letter and value, and initializes the instance variables.
Create getters for both of the attributes. (No setters, so that a Tile is immutable.)
Implement the .toString() and .equals methods for a Tile.
Your completed Tile class should work with this Main program (Links to an external site.) so that it produces sample output like shown at the end of the program. You can Fork the program to make your own version in Replit, where you can add your Tile.java, or you can copy the program to your own Java development…
1. Create a class called Elevator that can be moved between floors in an N-storey building. Elevator uses a constructor to initialize the number of floors (N) in the building when the object is instantiated.
Elevator also has a default constructor that creates a five- (5) storey building.
The Elevator class has a termination condition that requires the elevator to be moved to the main (i.e., first) floor when the object is cleaned up. Write a finalize() method that satisfies this termination condition and verifies the condition by printing a message to the output, Elevator ending: elevator returned to the first floor.
In main(), test at least five (5) possible scenarios that can occur when Elevator is used in a building with many floors (e.g., create, move from one floor to another, etc.).
Hint: Termination occurs when the instance is set to null. You may wish to investigate “garbage collection” for this exercise.
When solving this problem make sure that the user can interact with the…
Chapter 7 Solutions
Absolute Java (6th Edition)
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Assume that a program uses the named constant PI to represent the value 3.14. The program uses the named consta...
Starting Out with Java: From Control Structures through Objects (6th Edition)
Modify the code that you wrote in problem 4 so it adds all of the numbers read from the file and displays their...
Starting Out with Python (3rd Edition)
Write an SQL query to list all product line names and, for each product line, the number of products and the av...
Modern Database Management
The decimal number system is a weighted system with ten digits.
Digital Fundamentals (11th Edition)
Define each of the following terms: entity type entity-relationship model entity instance Attribute relationshi...
Modern Database Management (12th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- 1. Create a class called Elevator that can be moved between floors in an N-storey building. Elevator uses a constructor to initialize the number of floors (N) in the building when the object is instantiated. Elevator also has a default constructor that creates a five- (5) storey building. The Elevator class has a termination condition that requires the elevator to be moved to the main (i.e., first) floor when the object is cleaned up. Write a finalize() method that satisfies this termination condition and verifies the condition by printing a message to the output, Elevator ending: elevator returned to the first floor. In main(), test at least five (5) possible scenarios that can occur when Elevator is used in a building with many floors (e.g., create, move from one floor to another, etc.). Hint: Termination occurs when the instance is set to null. You may wish to investigate “garbage collection” for this exercise.arrow_forward1- Create a hierarchy of Java classes as follows: MyRectangle is_a MyShape; MyOval is a MyShape. Class MyPoint: Class MyPoint is used by class MyShape to define the reference point, p(x, y), of the Java display coordinate system, as well as by all subclasses in the class hierarchy to define the points stipulated in the subclass definition. The class utilizes a color of enum reference type MyColor, and includes appropriate class constructors and methods. The class also includes draw and toString methods, as well as methods that perform point related operations, including but not limited to, shift of point position, distance to the origin and to another point, angle [in degrees] with the x-axis of the line extending from this point to another point. Enum MyColor: Enum MyColor is used by class MyShape and all subclasses in the class hierarchy to define the colors of the shapes. The enum reference type defines a set of constant colors by their red, green, blue, and opacity, components,…arrow_forward4. Create a class called Invoice that a hardware store might use to represent an invoice for an item sold at the store. An Invoice should include four data members-a part number (type string), a part description (type string), a quantity of the item being purchased (type int) and a price per item (type int). Your dlass should have a constructor that initializes the four data members. A constructor that receives multiple arguments is defined with the form: ClassName( TypeName1 parameterName1, TypeName2 parameterName2, .) Provide a set and a get function for each data member. In addition, provide a member function named getinvoiceAmount that calculates the invoice amount (i.e., multiplies the quantity by the price per item), then returns the amount as an int value. If the quantity is not positive, it should be set to 0. If the price per item is not positive, it should be set to 0. Write a class program according to the main.cpp program given below. #include #include invoice #include…arrow_forward
- Imagine a publishing company that markets its works. Create a class publication that stores the title (a string), author (string), pages (int), pulicationDate (string) and price (type float) of a publication. There should be two constructor i.e. default and parameterized. The default Constructor should initialize the data members to 0 or 0.0 or “” if integers, floating point or string respectively. The parameterized constructor should assign user defined values to the data members. The default constructor should be inline while the parameterized constructor should not be inline. There should be an input/get function to input the values to the data members and a Print() to display the contents of the class variables/datamembers. Create two objects of the class named book, and tape. The book should be created with default constructor, while tape with parameterized constructor. Call input/get for book object only. Then call Print() for both the objects to display the contents. Mention…arrow_forwardLanguage is Java Write a Clothing class with the following attributes: color (e.g., "blue", "green", "orange") displayName (e.g., "Doctor Who hoodie", "slacks") price (e.g., 19.99, 7) Include only one constructor. It should have parameters for each of the attributes and set their values. Additionally, include getters and setters for each of the attributes. Add a driver, name it Purchases, and create 2 Clothing objects. Finally, print out some information about both objects (i.e., print the information from some or all of the getters). For example, if you created a Clothing object whose color was blue, whose display name was work trousers, for a price of 27.99, you could use the getters to print something like this:These work trousers are blue and cost $27.99.Don't hardcode the print statement for full credit, you must use the gettersarrow_forward1. Create a properly encapsulated class named Person that has the following: A String instance variable called name. A constructor that takes a String parameter and sets the instance variable. A properly named getter for the instance variable. A correctly overrided equals method which returns true if the name instance variable of the parameter and the reference variable calling the method are equal. (Do not forget the null and class type checks!) Compile your Person class. 2. Create a properly encapsulated class named Employee that inherits from Person and has the following: ● ● ● A String instance variable called office (e.g. "LWH 2222"). A String instance variable called hourlywage (e.g. "$45.15"). A constructor that takes three Strings as parameters for name, office, and hourlyWage and sets the instance variables of both the parent class and the Employee class. An overridden toString method that returns the concatenation of name and hourlyWage instance variables (separated by a…arrow_forward
- Please help with the following: C# .NET change the main class so that the user is the one that as to put the name in other words. Write a driver class that prompts for the person’s data input, instantiates an object of class HealtProfile and displays the patient’s information from that object by calling the DisplayHealthRecord, method. MAIN CLASS---------------------- static void Main(string[] args) { // Instance created holding 6 parameters which are field with value HealthProfile heartRate = new HealthProfile("James","Kill",1978, 79.5 ,175.5, 2021 ); heartRate.DisplayPatientRecord();// call the patient record method } CLASS HeartProfile------------------- public class HealthProfile { // attibutes which holds the following value private String _FirstName; private String _LastName; private int _BirthYear; private double _Height; private double _Weigth; private int _CurrentYear; public HealthProfile(string firstName, string lastName, int birthYear, double height, double wt, int…arrow_forwardDefine a new "Exam" class that manages the exam name (string) and its score (integer). For example, an exam can have - "Midterm Exam", 100 - "Final Exam", 50 The class must not provide the default constructor. It must require the exam name and score in order to initialize the Exam object. The class must provide only the following methods (no more and no less): - isPerfect method that returns true if the score is exactly 100 and false otherwise. - isPassing method that returns true if the score is equal or greater than 70 and false otherwise. - toString method must return all the exam information including the result of the exam as a string in the following format: EXAM(<name>) SCORE(<score>) RESULT(Pass/Fail) such asEXAM(Midterm Exam) SCORE(100) RESULT(Pass) EXAM(Final Exam) SCORE(50) RESULT(Fail) "Pass" means the score is greater or equal 70. "Fail" is whenever the score is below 70. - isGreater method that compares with another Exam object and return true if the score…arrow_forward2. You are to write a program that computes a patient's bill for a hospital stay. different components of the program are The The PatientAccount class The Surgery class The Pharmacy class The main program The PatientAccount class will keep a total of the patient's charges. It will also keep track of the number of days spent in the hospital. The group must decide on the hospital's daily rate. The Surgery class will have stored within it the charges for at least five types of surgery. It can update the charges variable of the PatientAccount class. The Pharmacy class will have stored within it the price of at least five types of medication. It can update the charges variable of the PatientAccount class. The student who designs the main program will design a menu that allows the user to enter a type of surgery and a type of medication, and check the patient out of the hospital. When the patient checks out, the total charges should be displayed.arrow_forward
- Java Object Oriented Programming Create a Shape class that shall have color and filled instance variables of enum Color and boolean type. The filled boolean variable shall show, whether the shape is filled (colored). The enum Color shall be defined within the class having 4 color names (choose any four). Also define getArea and getPerimeter method in Shape class, both shall return 0. Create Rectangle class with length and width attributes and a Circle class with radius attribute, of type double. Properly encapsulate all fields. Circle and Rectangle shall extend Shape class and override getArea and getPerimters methods as per its type and specific formula. In Test class, create an object of Rectangle and Circle, by initializing all attributes in constructor and print both shapes' area and perimters. In Test class, define a static method with following signature, public static void printEachShapeCount(Shape... shapes) As you know, the parent type variable can hold the…arrow_forward1. Design a new Triangle class that extends the abstract GeometricObject class. Write a test program that prompts the user to enter three sides of the triangle, a color, and a Boolean value to indicate whether the triangle is filled. The program should create a Triangle object with these sides and set the color and filled properties using the input. The program should display the area, perimeter, color, and true or false to indicate whether it is filled or not.arrow_forwardFor the StudentWorker class, create the following: A private int instance variable m hours. A private int instance variable m A constructor that takes four parameters (in the order of name, department, hours, hourly wage). It should use the parameters for hours and hourly wage to set the m_hours and m hourlyWage instance variables and then explicitly call the parent class constructor using the super keyword and pass in the two other parameters. hourlyWage. A getPaycheck method that implements the same method in the Employee class. It calculates the paycheck amount (m hours × m worker's paycheck as a string in the following format (Note that the three fields are hourlyWage) and returns the student separated by a hyphen, represented by the minus character. Do NOT add spaces before or after each hyphen. There are no commas in the number.): Optimus Prime-Computer Science-$1200arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
C++ Programming: From Problem Analysis to Program...Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage Learning
EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENT
Programming Logic & Design ComprehensiveComputer ScienceISBN:9781337669405Author:FARRELLPublisher:Cengage
C++ Programming: From Problem Analysis to Program...
Computer Science
ISBN:9781337102087
Author:D. S. Malik
Publisher:Cengage Learning
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781337671385
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT
Programming Logic & Design Comprehensive
Computer Science
ISBN:9781337669405
Author:FARRELL
Publisher:Cengage
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