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- In java Define and create an array (called emps) of object references for objects of class Employee of length 100. (b) Create three objects for classes SalariedEmp, WeeklyEmp, and HourlyEmp (where these 3 classes are subclasses of class Employee); and with references e1, e2, e3 for the 3 objects:(c) Assign e1,e2, e3 to the first three elements of array emps:(d) Print the earnings of the 100 employee in the array emps in one loop (with polymorphism) where earnings are calculated with method earnings():A1. Find the output of the following code in order. public class Faculty extends Employee ( E public static void main (String[) args) ( new Faculty () : System.out.println("GCood Luck") public Faculty () ( System.out.println(" Eaculty's no-arg constructor is invoked"): class Employee extends Person ( public Employee () ( System.ont.println( Employee's no-arg constructor is invoked") class Person ( public Person () ( this ("Invoke Person s overloaded constructor"); System.oub.println('Person s no-arg constructor is invoked"); public Person (String s) ( System.out.println(s) ロ** in Java ** Suppose we have a set of car. Each car has a number of colors, number of places, dimension and power. According to the set of cad we can have three sets: sedan, sport and pickup truck.1. Write a java program using the previous description.2. Use the flowing concepts,: heritage, polymorphism, encapsulation (get and set method)
- Computer Science use java language Using what you learned about Polymorphism, create 3 classes assigned Animal names for the superclass. and Dog and Cat for the subclasses. use a method called make sound () and override the output of this method in your subclasses.Instructions-Java Assignment is to define a class named Address. The Address class will have three private instance variables: an int named street_number a String named street_name and a String named state. Write three constructors for the Address class: an empty constructor (no input parameters) that initializes the three instance variables with default values of your choice, a constructor that takes the street values as input but defaults the state to "Arizona", and a constructor that takes all three pieces of information as input Next create a driver class named Main.java. Put public static void main here and test out your class by creating three instances of Address, one using each of the constructors. You can choose the particular address values that are used. I recommend you make them up and do not use actual addresses. Run your code to make sure it works. Next add the following public methods to the Address class and test them from main as you go: Write getters and…#2 The following code segment is an example of public int min(int a, int b, int c) { . } public int min(int a, int b, int c, int d) { ...} Answer polymorphism overloaded method overriding method interfaces
- I need help with this question, which should be completed in C# programming language.(Non-other) Complete the Person (base), Student (derived), Faculty (derived), Admin (derived), Staff (derived) Classes Use the following properties: 1- Person properties - firstName, lastName, email (type string), Person method - PersonWrite 2- Student properties - studentID (private string), use a getter and setter, define 2 constructors Student method - StudentWrite 3- Faculty properties - facultyID (private string), use a getter and setter, define 2 constructors Faculty method - FacultyWrite 4- Admin properties - adminID (private string), use a getter and setter, define 2 constructors Admin method - AdminWrite 5- Staff properties - staffID (private string), use a getter and setter, define 2 constructors Staff method - StaffWrite Initialize each of the classes, and print out the contents of each class to show inheritance. Create a Class Diagram for your program using VS Class Diagram/Designer…1. Write a Graph class in Java. This class should represent undirected graphs. You can choose one of the representationsfrom graph exercises, eg object model, sets of nodes and edges, adjacency matrix, or soon, whichever you feel most comfortable with.● Include comments in your Java file to explain how nodes and edges are represented.● Assume that only one edge can exist between two nodes.● Assume that it is possible to have an edge connecting a node to itself, ie that a nodecan be connected to itself via an edge.● Because edges are undirected, an edge between v and w is also one between w and v.● Your constructor method should take one parameter: the number of nodes of thegraph. Add a method to your class: boolean addEdge that takes two parameters, v andw (representing two modes v and w which are connected together by the edgebeing added). If successful, the method should return true. The method should return false when it isunsuccessful, which is in the following cases: the edge is…2
- 4c)this is a java theory question write the answer carefully and do not plagarize or copy from internet please write in simple words so that I can understandDefine and use an instance methodCan help with this in c++The base class is given Base: class Base { int a;double b;public:Base (int _a, double _b) : a(1), b(2.5) {}Base (int _a, double _b) :a(_a), b (_b) {}double calct () {return 1.5*a+2*b;}string toString(){return "a="+to_string(a) + "b=" + to_string(b);}};Define a class Derived, successor to Base, with an additional field d of type double. For Derived, write constructors, write a new implementation of the calc () method to add to the sum and field d with coefficient 3 and the toString () method, which returns the text description of an object of class Derived.Create objects of class Derived with the written constructors and call the two variants of the methods calc () and toString () (of the class Derived and its base class Base)