Define a class Name which has three data members: firstname, middle initial and lastname. Write two constructors - (1) default constructor and (2) a constructor that allows the initialization of all attributes Encapsulate. Override toString that prints in this format (John S. Doe) and equals method. Define another class Person which has Name, age and gender(possible values: M or F). Write three constructors - (1) default constructor, (2) a constructor that allows the initialization of all attributes, and (3) a constructor that allows the initialization of name and gender while setting age automatically to 25. Encapsulate the fields. Override toString that prints in this format

Define a class Name which has three data members: firstname, middle initial and lastname. Write two constructors - (1) default constructor and (2) a constructor that allows the initialization of all attributes Encapsulate. Override toString that prints in this format (John S. Doe) and equals method. Define another class Person which has Name, age and gender(possible values: M or F). Write three constructors - (1) default constructor, (2) a constructor that allows the initialization of all attributes, and (3) a constructor that allows the initialization of name and gender while setting age automatically to 25. Encapsulate the fields. Override toString that prints in this format

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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(1) Extend the ItemToPurchase class to contain a new attribute. item_description (string) - Set to "none" in default constructor Implement the following method for the ItemToPurchase class. print_item_description() - Prints item_description attribute for an ItemToPurchase object. Has an ItemToPurchase parameter. Ex. of print_item_description() output: Bottled Water: Deer Park, 12 oz. (2) Build the ShoppingCart class with the following data attributes and related methods. Note: Some can be method stubs (empty methods) initially, to be completed in later steps. Parameterized constructor which takes the customer name and date as parameters Attributes customer_name (string) - Initialized in default constructor to "none" current_date (string) - Initialized in default constructor to "January 1, 2016" cart_items (list) Methods add_item() Adds an item to cart_items list. Has parameter ItemToPurchase. Does not return anything. remove_item() Removes item from cart_items list.…
- Creates a class Teacher with two attributes: name and specialty. a. Add a constructor able to create a Teacher; b. Add the methods getName and getSpeciality; c. Add the method display able to display the attributes
1) Define a Person class containing two private attributes: last name, first name. Provide this class with a constructor allowing the initialization of its attributes and a method that displays the last name and first name of a person: void display (). 2) Define a Customer class inheriting from the Person class and having a private attribute: numidentity. Provide this class with a constructor allowing you to create a customer from their last name, first name and identity card number and a method: • void display() which displays the last name, first name and ID number of a customer. 3) Define an Owner class inheriting from the Person class and having two private attributes: name of the video club (nomclub), address of the club (adrclub). Provide this class with a constructor allowing to create a landlord from his name, his first name, the name of his video club, the address of his club and a method: • void display() who displays the name, first name, last name and address of his video…
Define a java Name class with attributes: String firstname, middle name, lastname. Include the following methods: - A constructor with 3 parameters. Initialize the 3 member variables to the parameters being passed. Also, include the default constructor. - getter and setter methods for all attributes - override toString method Define a class called DebitCard. A debit card has a card number, Name and balance. a) Include a constructor with 3 parameters. Initialize the 3 member variables to the parameters being passed. Also, include the default constructor. b) Include getters/setters for all attributes. c) Add the following member functions: float inquireBalance() float depositCash(float amount) //increases the balance with amount boolean withdrawCash(float amount) // returns true if sufficient amount is available for withdrawal and decreases the balance by amount float interest(float rate) //calculates the interest rate incurred. Assume the parameter rate is considered as…
Define a java Name class with attributes: String firstname, middle name, lastname. Include the following methods: - A constructor with 3 parameters. Initialize the 3 member variables to the parameters being passed. Also, include the default constructor. - getter and setter methods for all attributes - override toString method Define a class called DebitCard. A debit card has a card number, Name and balance. a) Include a constructor with 3 parameters. Initialize the 3 member variables to the parameters being passed. Also, include the default constructor. b) Include getters/setters for all attributes. c) Add the following member functions: float inquireBalance() float depositCash(float amount) //increases the balance with amount boolean withdrawCash(float amount) // returns true if sufficient amount is available for withdrawal and decreases the balance by amount float interest(float rate) //calculates the interest rate incurred. Assume the parameter rate is considered as…
For each statement, indicate if it is True or False by circling T or F. If you need to cross out an answer, be sure that your final answer is clear and unambigous-otherwise it will receive no credit. 1- An object of a derived class has access to the public methods of its base class T F 2- An object of a base class has access to the private helper methods of its derived class T F 3- Destructors are not inherited by derived classes T F T F T F u- An object of a derived class inherits the copy constructor of its base class 5- Operators are passed down inheritance hierarchies 6- Destructors in derived classes are called after their base class calls its destructor 7. Constructors of base classes are accessible by derived classes T T F F
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…
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…
- Creates a class Student with 3 attributes: name, id and level. a. Add a constructor able to create a Student; b. Add the methods getId and getName; c. Add the method display able to display the attributes, - Creates a class Teacher with two attributes: name and specialty. a. Add a constructor able to create a Teacher; b. Add the methods getName and getSpeciality; c. Add the method display able to display the attributes - Creates a class TA extending the classes Student and Teacher with one more attribute: Supervisor of type Teacher; a. Add a constructor to create a TA; b. Add the method getSupervisor able to return the TA's Supervisor. c. Add a display method: display need to override (polymorphism) the previous display method of the basic classes; - Creates a class called CourseClass with 6 attributes: a. name: the course name; b. maxStud: a maximum number of Student into the CourseClass; c. nbStud: the current number of Student into the CourseClass. When a CourseClass is created,…
5. Define a class Student to create Student Objects. The class defines two variables for its objects: name (String ) and average (double). The class provides a constructor with arguments and includes the following object methods to do the following: - public void print() : prints the Student data - public void setAverage(double newAvergae): sets the student average with a new value. Define a class StudentTest In the main method, create three student objects (Ali, Rami, Khalid) with initial average 60 for each one. Call the setAverage method on each created student to change their average with a randomly value (hint: use Math.random( ) method to generate average value in range [0..100]). - Print the name of the student who's the maximum average. hint: you should compare between the Student objects according to their average.
Design a class named Employee. The class should keep the following information infields:• Employee name• Employee number in the format XXX-L, where each X is a digit within the range0-9 and the Lis aletter within the range A-M.• Hire date* Write one or more constructors and the appropriate accessor and mutator methods for theclass.Next, write a class named ProductionWorker that extends the Employee class. TheProductionWorker class should have fields to hold the following information:• Shift (an integer)• Hourly pay rate (a double)The workday is divided into two shifts: day and night. The shift field will be an integer valuerepresenting the shift that the employee works. The day shift is shift 1 and the night shift isshift 2. Write one or more constructors and the appropriate accessor and mutator methodsfor the class. Demonstrate the classes by writing a program that uses a ProductionWorkerobject. have to use beginner code because this is an intro class.
1). Develop a class named Department with two data members: name and size. The name cantake values such as "Finance", "Human Resources". size is for how many people work in thedepartment; You should provide all constructors, all get/set methods, and the toString method;2). Develop a class called Company which should have at least four data members: name,address, totalNumberOfEmployees, and departments (of type Department; an array). The relationbetween Company and Department is composition. The total number of employees is the sum ofthe sizes of all departments. You should provide all constructors, especially the constructor thatreceives departments as an initial value, all get/set methods, and the toString method;3). Create three departments: "Finance", "Human Resources", "IT". Test all constructors, andget/set methods, toString method; take screenshots;4). Create a company object with the above departments: "Finance", "Human Resources", "IT".Test all constructors, and get/set…