Exercise 5: Implement a class according to its UML class symbol: Product -name: String "price: double -scancode: int "numofobjecta: int-0 +Product (String, double) : +getName (): String +getScanCode: int +getPrice () : double +change Price (double): void +getNumofobjects(): int The constructor shall take two parameters to initialise the name and price data fields. The acancode is a 4-digit integer value 1000+numofobjects that shall be calculated and initialised by the constructor. The variable numofobjects shall be incremented by the constructor every time a new objoct of type Product is instantiated.
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- Java program * Interfaces 1. Modify the class Rectangle to implement the Comparable interface, as shown in the following UML class diagrams. Apply the required changes in the class’s header.2. Then, in the Rectangle class override the method compareTo(), so if this object’s area is greater than the specified (given through the parameter) object’s area return 1, if it is less than return -1, and 0 otherwise. 3. Create a test class named Test2. Then complete the following tasks: a. Create an ArrayList and add to it 4 Rectangle objects with different width and height values. b. Print out the elements of the ArrayList. c. Sort the elements of the ArrayList using the static method sort of the class java.long.Collections. This would be possible only, if you implemented the method compareTo() correctly in the Rectangle class. d. After sorting the elements of the ArrayList, print the elements again. 4. Run the Test class. Here is the rectangle's class program public class Rectangle extends…Java Question - Based on code, which answer out of the choices "A, B, C, D, E" is correct. Question has one correct answer. Thank you. Part 2 - 10. Given the following code, which statement is true? class Water() { ... }class Juice() extends Water { ... }class Apple() { ... }class ApplePie() { Apple a1 = new Apple(); }class AppleJuice() { Apple a1 = new Apple(); Water w1 = newWater(); } A. Juice is a superclass and Water is a subclass.B. ApplePie is a superclass of Apple.C. ApplePie is a composite class that contains an instance of Apple class.D. AppleJuice is a superclass that contains an instance of Apple class and an instance of Water.E. Water is a composite class that contains an instance of Juice.5Java Program This assignment requires one project with two classes. Class Employee Class Employee- I will attach the code for this: //Import the required packages. import java.text.DecimalFormat; import java.text.NumberFormat; //Define the employee class. class Employee { //Define the data members. private String id, lastName, firstName; private int salary; //Create the constructor. public Employee(String id, String lastName, String firstName, int salary) { this.id = id; this.lastName = lastName; this.firstName = firstName; this.salary = salary; } //Define the getter methods. public String getId() { return id; } public String getLastName() { return lastName; } public String getFirstName() { return firstName; } public int getSalary() { return salary; } //Define the method to return the employee details. @Override public String toString() { //Use number format and decimal format //to…
- Java Program This assignment requires one project with two classes. Class Employee Class Employee- I will attach the code for this: //Import the required packages. import java.text.DecimalFormat; import java.text.NumberFormat; //Define the employee class. class Employee { //Define the data members. private String id, lastName, firstName; private int salary; //Create the constructor. public Employee(String id, String lastName, String firstName, int salary) { this.id = id; this.lastName = lastName; this.firstName = firstName; this.salary = salary; } //Define the getter methods. public String getId() { return id; } public String getLastName() { return lastName; } public String getFirstName() { return firstName; } public int getSalary() { return salary; } //Define the method to return the employee details. @Override public String toString() { //Use number format and decimal format //to…Java Program This assignment requires one project with two classes. Class Employee Class Employee- I will attach the code for this: //Import the required packages. import java.text.DecimalFormat; import java.text.NumberFormat; //Define the employee class. class Employee { //Define the data members. private String id, lastName, firstName; private int salary; //Create the constructor. public Employee(String id, String lastName, String firstName, int salary) { this.id = id; this.lastName = lastName; this.firstName = firstName; this.salary = salary; } //Define the getter methods. public String getId() { return id; } public String getLastName() { return lastName; } public String getFirstName() { return firstName; } public int getSalary() { return salary; } //Define the method to return the employee details. @Override public String toString() { //Use number format and decimal format //to…Lab 8.1 Declare Card subclassesConsider using the following Card class.public class Card{ private String name; public Card() { name = ""; } public Card(String n) { name = n; } public String getName() { return name; } public boolean isExpired() { return false; } public String format() { return "Card holder: " + name; }} Use this class as a superclass to implement a hierarchy of related classes: Class Data IDCard ID number CallingCard Card number, PIN DriverLicense Expirationyear Write declarations for each of the subclasses. For each subclass, supply private instance variables. Leave the bodies of the constructors and the format methods blank for now. Important: DriverLicense is subclass of IDCard class Lab 8.2 Provide constructors for Card subclassesImplement constructors…
- 1- Create a class SchoolKid that is the base class for children ar aschool . It should have attributes of the child’s name and age ,the name of the child’s teacher ,and the greeting. It should haveappropriate accessor and mutator methods for each of the attributes. Derive a class ExaggeratingKid from schoolkid , as described above . The new class should override the accessor method for the age , reporting the actual plus 2. It also should override the accessor for the greeting ,returning the child’s greeting concatenated with the words “I am the best”.Implement “SoftwareEngineer” and “CheifEngineer” class derived from “Employee” class with necessary properties so that the expected output is generated. Do not change any given code. # Write your codes here.# Do not change the following lines of code.sw1 = SoftwareEngineer("Bob","Software Engineer",40,1200)print('1.------------------------------------')sw1.calculateWeeklyIncome()print('2.------------------------------------')print(sw1)print('3.------------------------------------')sw2 = SoftwareEngineer("Carol","Software Engineer",45,1200,5)print('4.------------------------------------')sw2.calculateWeeklyIncome()print('5.------------------------------------')print(sw2)print('6.------------------------------------')print(Employee.employeeInfo)print('7.====================================')ce1 = ChiefEngineer("John","Chief…Implement a BankAccount class. BankAccount must have the following members: A member variable account_no of the type unsigned int.A member variable owner_name of type std :: string.A member variable balance of the double type.A parameterized constructor that takes account_no and owner_name as input parameters.A deposit feature to make a deposit.A withdraw function to make a withdrawal. A withdrawal may only be made if the balance is sufficient. The function must return the balance after withdrawal.The members must be encapsulated in accordance with the usual convention. Overlay the inflow operator (>>) for the BankAccount class Input follows the format:[account_no] [owner_name] [balance] and must be loaded with the inflow operator. Output should have the following format:Account [account_no], owned by [owner_name] has the balance [balance] Note that the square brackets refer to variables or special characters and are not included.You may add necessary designers, member…
- This assignment requires one project with two classes. Class Employee Class Employee- I will attach the code for this: //Import the required packages. import java.text.DecimalFormat; import java.text.NumberFormat; //Define the employee class. class Employee { //Define the data members. private String id, lastName, firstName; private int salary; //Create the constructor. public Employee(String id, String lastName, String firstName, int salary) { this.id = id; this.lastName = lastName; this.firstName = firstName; this.salary = salary; } //Define the getter methods. public String getId() { return id; } public String getLastName() { return lastName; } public String getFirstName() { return firstName; } public int getSalary() { return salary; } //Define the method to return the employee details. @Override public String toString() { //Use number format and decimal format //to format the salary…JAVA PROGRAM Create a class EmployeeImp and do the following implement interface EmployeeInterface Define the following attributes: int count and an array variable of type Employee. Write a default constructor and initialize array Employee with the size defined in EmployeeInterface Write a constructor that accepts size of an array as parameter. Create array Employee with the parameter size. Use the diagram attached below as reference for the data members of each class.Java Exercise 3. Movable PointA. Write the classes as shown in the following class diagram. Movable is an interface and MovablePoint implements it. ‘~’ means package access but you can just make it public. (pic1.png) B. Now add the class MovableCircle which also implements the interface Movable and is composed of a MovablePoint. Add a tester that allows the user to enter the radius and center of a MovableCircle. After that ask the user if they want (yes/no) to move the circle and how they want to move it (up, down, left, right). Everytime the circle is moved, you should output its changed position. If the user says “no” the program ends. (pic2.png)