1. Person (abstract class) that has the following: Data Fields: private String name, private String address Constructor: Constructor to create a Person object with specified name and address. Methods: Accessor and mutator methods for all data fields. 2. Student (extend the class Person) that has the following: Data Fields: private int ID, private double grade Constructor: Constructor to create a Student object with specified name, address, ID & grade. Methods: Accessor and mutator methods for all data fields. 3. Director (extend the class Person) that has the following: Data Fields: private double salary. Constructor: Constructor to create a Director object with specified name, address, and salary. Methods: Accessor and mutator methods for salary data field. 4. GraduateStudent(extend the class Student) that has the following: Data Fields: - Constructor: Constructor to create a GraduateStudent object with specified name, address, ID, and grade. Methods: -

1. Person (abstract class) that has the following: Data Fields: private String name, private String address Constructor: Constructor to create a Person object with specified name and address. Methods: Accessor and mutator methods for all data fields. 2. Student (extend the class Person) that has the following: Data Fields: private int ID, private double grade Constructor: Constructor to create a Student object with specified name, address, ID & grade. Methods: Accessor and mutator methods for all data fields. 3. Director (extend the class Person) that has the following: Data Fields: private double salary. Constructor: Constructor to create a Director object with specified name, address, and salary. Methods: Accessor and mutator methods for salary data field. 4. GraduateStudent(extend the class Student) that has the following: Data Fields: - Constructor: Constructor to create a GraduateStudent object with specified name, address, ID, and grade. Methods: -

Programming Logic & Design Comprehensive

9th Edition

ISBN:9781337669405

Author:FARRELL

Publisher:FARRELL

Chapter11: More Object-oriented Programming Concepts

Section: Chapter Questions

Problem 15RQ

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3. Person and Customer Classes The Person and Customer Classes Write a class named Person with data attributes for a person’s name, address, and telephone number. Next, write a class named Customer that is a subclass of the Person class. The Customer class should have a data attribute for a customer number, and a Boolean data attribute indicating whether the customer wishes to be on a mailing list. Demonstrate an instance of the Customer class in a simple program.
. Given the following classes, answer the below questions. Person (abstract class) that has the following: Data Fields: private String name, private String address Constructor: Constructor to create a Person object with specified name and address. Methods: Accessor and mutator methods for all data fields. Design UML diagram for the above classes. Write the code only for class Person and Class Student.
B1. Given the following classes, answer the below questions. 1. Person (abstract class) that has the following: Data Fields: private String name, private String address Constructor: Constructor to create a Person object with specified name and address. Methods: Accessor and mutator methods for all data fields. 2. Student (extend the class Person) that has the following: Data Fields: private int ID, private double grade Constructor: Constructor to create a Student object with specified name, address, ID & grade. Methods: Accessor and mutator methods for all data fields. 3. Director (extend the class Person) that has the following: Data Fields: private double salary. Constructor: Constructor to create a Director object with specified name, address, and salary. Methods: Accessor and mutator methods for salary data field. 4. GraduateStudent(extend the class Student) that has the following: Data Fields: - Constructor: Constructor to create a GraduateStudent object with specified name,…
QUESTION 16 What must be true of a class with one abstract method? O The class must also implement the Iterable interface Any derived class must implement the method The abstract method must have the static modifier O The method cannot specify a return value QUESTION 17 Suppose we wanted to design a set of classes for a veterinarian's office. Our Customer class looks like this: public class Customer { Pet [] pets; } Select all the statements that are true Once the size of the pets array has been set, it cannot be changed Because we're using an array, all pets must be the same A customer must have at least one pet We also need to declare a Pet class QUESTION 18 What is the proper use of an enumeration? To define a set of ordered values To enforce the use of the Comparable interface O To define, or enumerate, the values returned by a Random object generator O To define the classes in an inheritance hierarchy
2. Implement the class below such that it should provide structure with necessary Data Members to all the sub-classes of itself. The object creation of this class is not mandatory. Book -name:String -author:Author -price:double -qty:int = 0
. Given the following classes, answer the question. Director (extend the class Person) that has the following: Data Fields: private double salary. Constructor: Constructor to create a Director object with specified name, address, and salary. Methods: Accessor and mutator methods for salary data field. Design UML diagram for the above classes. Write the code only for class Person and Class Student.
Person and Customer Classes Write a class named (Person) with data attributes for a person’s name, address, and telephone number. Provide accessors/getters and mutators/setters for each attribute. Write a displayPerson() to print out the attributes of the Person. Next, write a class named (Customer) that is a subclass of the (Person) class. The (Customer) class should have a data attribute for a customer number, and a Boolean data attribute indicating whether the customer wishes to be on a mailing list. Provide accessors/getters and mutators/setters for each attribute. Write a display customer() to print out the attributes of the Customer. Demonstrate an instance of the (Customer) class in a simple program.
In-class Assignment Day 8 You should draw the hierarchy for your classes to understand how the coding should be structured. Be sure to notate any classes that are abstract. Write an abstract class for Shape. The intended subclasses are Polygon, Circle, Triangle, and Rectangle. All of these will have a name, an area, and a perimeter. (Consider which methods might be abstract.) Add a toString method that will return the information about the Shape, for example: Triangle, Area: 7.5, Perimeter: 12.0 Write the class Rectangle. A Rectangle is a Shape and should have a width and a height. When a Rectangle is outputted, it should read: Rectangle, Length: #, Width: #, Area: #, Perimeter: # Write the class for Circle. Every circle is a Shape that has a radius. Be sure to provide an accessor method (getter) for the radius. When a circle is outputted, it should read: Circle, Radius: #, Area: #, Circumference: # Write a TestShape class that has the main method, which creates…
Consider the following class: 1.Write its default constructor 2.Write a code to declare an object from this class using the default constructor public class Dog { String name; String color; void barking() { } void hungry() { } void sleeping() { } }
1. Create abstract class Pet , which is the abstract super class of all animals.1. Declare an integer attribute called legs, which records the number of legs for this animal.2. Define a constructor that initializes the legs attribute.3. Declare an abstract method eat.4. Declare a concrete method walk that prints out something about how the animals walks (include the number of legs).2. Create the Dog class that implements Pet class.1. This class must include a String attribute to store the name and food of the pet2. Define a default constructor that calls the super class constructor to specify that all dogs have 4 legs and name.3. override the eat and walk method.3. Create the Cat class that Implements Pet class.1. This class must include a String attribute to store the name of the pet, and a string to save food .2. Define a constructor that takes one String parameter that specifies the cat's name. This constructor must also call the super class constructor to specify that all cats have…
Create a class Animal and Add a protected data member named id of integer type. Add get/set methods for id data member in Animal class with public access. Also provide default constructor this should initialize id to 0. Also provide parameterized constructor and toString method. Add an abstract method tellAboutSelf method to Animal class with public access Add another abstract method speak method to Animal class. Reptile, Bird, Mammal Next create the three child classes which extends form Animal class. Add a default constructor to each of the above created class. The constructor should initialize the id data member id, Reptile, Bird and Mammal, to 1, 2 and 3 respectively also it display a message “(class Name)’s default constructor”. E.g. for Bird it says “Bird’s default constructor”. Add a parameterized constructor to each of the above created class. The constructor should initialize the id data member, Reptile, Bird and Mammal, to the specified id passed to the constructor also it…
Consider the following class: public class theClass { private double value; private string str; public static int count; public theClass () { } public theClass (double d, int, x, String s) { } public void print() { } public static void incrementCount() { } } a) How many members do class theClass have? b) Compare the purpose of the two constructors. c) Use the reference this to write the definition of a method print( )to output the value of the instance data members separated by commas. d) Write a statement to create an object myClass of the class theClass and initialise the instance variables to 5, 10.75 and the string Class. e) Write a definition (heading) for a copy constructor for the class.