Create a program in java that implements Polymorphism to compute the wages of regular and contractual employees.
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Create a program in java that implements Polymorphism to compute the wages of regular and contractual employees.
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- only in java not in java c++ 1. Define an interface named Shape with a single method named area that calculates the area of the geometric shape: public double area(); 2. Implement the Shape interface for Rectangle, Circle and Triangle class. 3. Implement a class CalculateAreas that has a function that takes shape type array of objects and builds an array of (double values) values for each corresponding shapesDesign a Java class named LinearEquation for a 2-by-2 system of linear equations:ax + by = e x=(ed-bf)/(ad-bc)cx + dy = f y=(af-ec)/(ad-bc) The class contains:• Private double data fields a, b, c, d, e, and f.• A constructor with the arguments for a, b, c, d, e, and f.• Six getter methods for a, b, c, d, e, and f.• Methods getX() and getY() that return the solution for the equation.• A method named isSolvable() that returns true if ad - bc is not 0. The method isSolvable() willbe called in the main, if it returns true display the calculated values for x and y by calling getX()and getY(). If the call to isSolvable() returns false, display a message that “the equation has nosolution”. Write a Java program that prompts the user to enter a, b, c, d, e, and f and displays the result. After the valuesfor a through f are entered, create a LinearEquation object. Check to seeIf ad - bc is 0, report that “The equation has no solution”, otherwise print out the values for x and y.Write a java program to create a class Employee which contains member variables as name (String object)empid (Integer object)salary (Float object)age (Integer object)Define a default as well as a parameterized constructor to initialize member variables with default and specified values respectively. Define and overload a method search as defined below boolean search (Employee e[ ], String name) To search an employee with name in an array of employee objects, if found return true, else false.boolean search (Employee e[ ], Integer empid) To search an employee with the empid in an array of employee objects, if found return true, else false.Also define another method to get the name of employee having highest salary in a set of employees. String getHighestSalary(Employee e[ ]) To return the name of the employee with highest salary in an array of employee objects.Input: At least 3 employee details like name, empid, salary and age.Name of employee to searchId of employee to searchOutput:…
- write in java Program a class representing a player hand. The hand should be unbounded in size. A hand should have some data structure containing cards. We should be able to add a card to the hand and remove a card from the hand. Cards should always be added to the end of the hand, but can be removed from any point in the hand. We should also be able to shuffle our hand, examine any card in our hand, count the cards in our hand, sort our hand by value (both from being completely unsorted and upon adding a card to or removing a card from a sorted hand), and search a sorted hand for cards of a specific value. You may implement any helper methods you needWrite a Java class Student inherited from Person class. Your class must have the following features: Student - major: String + Student() + Student(name: String, id: int, major: String) + getMajor(): String + Override toString() method: you have to return needed data Fields values. Note: major data members can take only CS for Computer Science, CIS for Computer and Information Systems, CPE for Computer Engineering, SE for Software Engineering, and NES for Network Engineering and Security.Write a Java class Person for dealing with persons. Your class must have the following features:
- Write a Java program that consists of at least three classes for Students, Employees and Courses registration in University. The program should be fully documented, and the following concepts should be applied: Defining a constructor with and without arguments. Use the setter, getter and toString methods Sending an object/s to a method and returning it as a return value. Defining array of objects and using loop/s and Scanner object/s for data entry. Defining the main method that integrates the whole project.Implement the below-given scenario using a Circular Link List of data structure in C++ Programming. Use classes and apply the encapsulation rules also. In an online shopping cart, the system must maintain a list of items and must calculate the total bill by adding the amount of all the items in the cart. Do Following: First create a class Item having id, name, price, and quantity provide appropriate methods and then Create Cart/List class which holds an items object to represent total items in the cart and next pointer Implement the method to add items in the array, remove an item and display all items. Now in the main do the following Insert Items in the list Display all items. Traverse the link list so that each item's bill gets calculated (by multiplying quantity with price) and also calculate and display the Total bill in the end. Delete an item if the user wants to remove an item from the cart.Write a Program in java Define an interface named Shape with a single method named area that calculates the area of the geometric shape: public double area(); Implement the Shape interface for Rectangle, Circle and Triangle class. Implement a class CalculateAreas that has a function that takes shape type array of objects and builds an array of (double values) values for each corresponding shapes
- Provide the UML class diagram for Fraction class and the structure chart for the client import java.util.Scanner; //Import the essential package import java.util.ArrayList; import java.util.Scanner; //Define the class Fraction class Fraction { //Declare the variables to store the numerator and denominator private int n, d; //Define the default constructor public Fraction() { //Initialize the values this.n = this.d = 0; } //Define the parameterized constructor public Fraction(int n, int d) { //Initialize the variables this.n = n; this.d = d; } //Define the getter function getNum() that returns the numerator public int getNum() { //Returns numerator return n; } //Define the getter function getDen() that returns the denominator public int getDen() { //Returns denominator return d; } //Define the boolean function isZero() that returns 0 if numerator is 0 and denominator is not equals to zero public boolean isZero() {…Write a Java class Course for dealing with courses. Your class must have the following features: Course - name: String - lineNumber: int - symbol: String - sections: ArrayList + Course() + Course(name: String, lineNumber: int, symbol: String) + getName(): String + getLineNumber(): int + getSymbol(): String + getSections(): ArrayList + addSection(section: Section): void + Override toString() method: you have to return needed data Fields values. addSection(section: Section) method add a section (number and the teacher for this section) to the array list of sections. Note: sectionNumber will be generated automatically. Write a Java class Section for dealing. Your class must have the following features: Section - number: int - teacher: Teacher - students: ArrayList + Section() + Section(number: int, techer: Teacher) + getNumber(): int + getTeacher(): Teacher + getStudents(): ArrayList + addStudent(student: Student): void + Override toString() method: you have to return needed data…1- Based on the UML shown below, Implement in Java the following inheritance hierarchy (the classes' description comes next): Disk - title: String - playTime: int // in minutes + Disk(title: String, playTime: int) + getTitle(): String + getPlay Time(): int + toString(): String Audio Video - artist: String - director: String · tracksList: java.util.ArrayList - description: String + Audio(artist: String, title: String, + Video(director: String, description: play Time: int) String, title: String, playTime: int) + getArtitst(): String + getDirector(): String + getTracksList() + getDescription(): String + addTrack(name: String): void + toString(): String + removeTrack(name: String): void + toString(): String A. Disk class is characterized by a String attributes title and an integer playTime. This class has: • A constructor that initializes all the attributes. • The getter and setter methods for the attributes. • A to String() method that returns each data field at a line in the form:…