Exercise 3: Create class Date with following instance variable and methods. Instance variables: private int day, month, year Constructor: Date(int :day, int month, int: year) Methods: int getDay( ), getMonth( ), getYear(), setDay(int: day), setMonth(int: month), setYear(int: year), setDate(int: day, int: month, int year), toString()

Exercise 3: Create class Date with following instance variable and methods. Instance variables: private int day, month, year Constructor: Date(int :day, int month, int: year) Methods: int getDay( ), getMonth( ), getYear(), setDay(int: day), setMonth(int: month), setYear(int: year), setDate(int: day, int: month, int year), toString()

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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Java program Make a class Employee with a name and salary. Make a class Manager inherit from Employee. Add an instance variable, named department, of type String. Supply a method toString that prints the manager’s name, department, and salary. Make a class Executive inherit from Manager. Supply appropriate toString methods for all classes. Supply a test program that tests these classes and methods.
(Java) Question 6 Explain the answer step-by-step and include verbal explanation. Thank you! Given the below Tesla class, update the class to inherit from the Comparable interface and also write a compareTo method that orders two Tesla objects according to 1. model, 2. range, and 3. color: public class Tesla { private String model; private int range; private String color; public Tesla(String model, int range, String color) { this.model = model; this.range = range; this.color = color; } @Override public boolean equals(Object o) { if (this == o) return true; } else if (!(o instanceof Tesla)) { return false; } else { Tesla t = (Tesla) o; return model.equals(t.model) && range == t.range && color.equals(t.color); } }}
Using JAVA Language Consider a Billing class that implements an interface Payable having a method getTotalPaymentAmount(). Besides this, you have a Doctor class with private instance variables (docID, docName, and docFee) and a public getDoc() method, Patient class with private instance variables (pName, pID, pDisease), Medicine class with private instance variables (medID, medName, medQty, medPrice), and MedicalTest class with private instance variables (testID, testName, testPrice). Each of these classes has the toString() method to display the information of its object. The Billing class is having "Has A" relationship with the other four classes (Doctor, Patient, Medicine, and MedicalTest) mentioned above. The getPaymentAmount() method of Billing class returns the total billing amount that includes doc fee, medicine cost, and medical test fee that a patient has to pay. After implementing these classes, you are required to do the following in the driver class: Create an ArrayList of…
Write a complete program for the description given below. Consider a Billing class that implements an interface Payable having a method getTotalPayment Amount(). Besides this, you have a Doctor class with private instance variables (docID, docName, and docFee) and a public getDoc() method, Patient class with private instance variables (pName, pID. pDisease), Medicine class with private instance variables (medID, medName, medQty, medPrice), and Medical Test class with private instance variables (testID, testName, testPrice). Each of these classes has the toString() method to display the information of its object. The Billing class is having "Has A" relationship with the other four classes (Doctor, Patient, Medicine, and MedicalTest) mentioned above. The getPayment Amount() method of Billing class returns the total billing amount that includes doc fee, medicine cost, and medical test fee that a patient has to pay. After implementing these classes, you are required to do the following in…
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Given the following class. (JAVA) public class FamilyMember { public String drink( ) {return “cup”;} public String eat( ) {return “fork”;} } Write a Baby class that is derived from the FamilyMember class. The Baby class has an instance variable for the age, a default constructor, and a constructor that accepts an integer. Include any other necessary methods. If a baby is older than 3 years, print that “it eats with its fork”; otherwise, “it eats with its hands”.
Solve B please(A) Write a class called Course having data members: courseNum (String such as ITCS214), courseName (String such as Data Structures), credits (int), section (int). Include the following public methods in the class: Default constructor (without any parameters), constructor with 4 parameters, set and get methods for all attributes, equals and toString methods (B) Write a class called Student having following data fields: idNum (long), firstName (String), lastName (String), gender (char), email (String), coursesRegistered (ArrayList of type Course). Note that coursesRegistered is a list of type ArrayList (Java class) in which each element is of class type Course. The coursesRegistered is the list of courses in which the student is currently registered. It has following methods: Default constructor (without any parameters), constructor with 5 parameters (except for coursesRegistered), set and get methods for all attributes, equals, and printCoursesRegistered. The list…
1/ Write a BankAccountTester class whose main method constructs a bank account, deposits $1,000, withdraws $500, withdraws another $400, and then prints the remaining balance. Also print the expected result 2/ Implement a class Employee. An employee has a name (a string) and a salary (a double). Provide a constructor with two arguments public Employee(String employeeName, double currentSalary) and methods public String getName() public double getSalary() public void raiseSalary(double byPercent) These methods return the name and salary, and raise the employee's salary by a certain percentage. Sample usage: Employee harry = new Employee("Hacker, Harry", 50000); harry.raiseSalary(10); // Harry gets a 10 percent raise Supply an EmployeeTester class that tests all methods. 3/Implement a class Car with the following properties. A car has a certain fuel efficiency (measured in miles/gallon or liters/km—pick one) and a certain amount of fuel in the gas tank. The efficiency is specified in…
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