What is the polymorphism in Java? Complete the following code that explains Polymorphism: run(){System.out.println("running");} } class Bicycle{ void class Hero extends Bicycle { } public static void main(String args[]){ b.run(); } }
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- Create a program in Java that implements Polymorphism and asks the users input to compute the wages of regular and contractual employeesFOR JAVA Write a Java class named Book, which has a name, an author and a pub- lisher. This class must also have a static field (an array with length 100) which holds names of all constructed books, and a static method which returns the number of constructed books.use java (ArrayList, inheritance, polymorphism, File I/O and basic Java) Student class: First, you need to design, code in Java, test and document a base class, Student. The Student class will have the following information, and all of these should be defined as Private: A first name (given name) A last name (family name/surname) Student number (ID) – an integer number (of type long) The Student class will have at least the following constructors and methods: (i) two constructors - one without any parameters (the default constructor), and one with parameters to give initial values to all the instance variables of Student. (ii) only necessary set and get methods for a valid class design. (iii) a reportGrade method, which you have nothing to report here, you can just print to the screen a message “There is no grade here.”. This method will be overridden in the respective child classes. (iv) an equals method which compares two student objects and returns true if they…
- Consider the following code in Java 8:public interface Runnable{void run() ;}public final class Caller {public static void call (String before, String after, Runnable r) (System.out.println(before);r. run() ;System.out.println(after);} }public class MyClass{public static void main(String args[]) (Caller.call("BEFORE", "AFTER",); } }Complete the blark line with some code so that the program prints the folowing to the output: BEFOREHi there!AFTERNEED HELP WITH JAVA PROGRAM PLEASE HELP THANK YOU . -ERROR SEE IMAGE BELOW Cake.java public abstract class Cake{protected String name;protected double rate;protected double calcPrice;public Cake(String n, double r){name = n;rate = r;}public abstract double calcPrice();public String toString(){return name + "\t" +rate;}}class orderCake extends Cake{double weight;public orderCake(double weight,String n, double r){super(n,r);this.weight= weight;}public double calcPrice(){return rate * weight;}}class readymadeCake extends Cake{double quantity;public readymadeCake(double quantity,String n, double r){super(n,r);this.quantity= quantity;}public double calcPrice(){return rate * quantity;}} TestCakeProgram.java import java.util.Scanner;class TestCakeProgram{public static void main(String args[]){Scanner sc= new Scanner(System.in);int choice=0;System.out.println("ENTER RATE FOR ORDERED CAKE: ");double rate0=sc.nextDouble();System.out.println("ENTER RATE FOR READYMADE CAKE: ");double…Please write a Java program with at least two classes. Use a circle to represent it! The class should have at least one non-static setter method and one non-static getter. Implement at least one method test that invokes the setter method and the corresponding getter method so that the value out == the value in!
- JAVA Program ASAP Please modify this program and take out the main method from the program so it passes the test cases in Hypergrade. I have provided the failed test cases. import java.io.BufferedReader;import java.io.FileReader;import java.io.IOException;import java.util.ArrayList;import java.util.Arrays;import java.util.InputMismatchException;import java.util.Scanner;public class FileSorting { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); while (true) { System.out.println("Please enter the file name or type QUIT to exit:"); String fileName = scanner.nextLine(); if (fileName.equalsIgnoreCase("QUIT")) { break; } try { ArrayList<String> lines = readFile(fileName); if (lines.isEmpty()) { System.out.println("File " + fileName + " is empty."); } else { performSorting(lines);…implement the following class diagrams and test their method .Write this code on javaplease i need add interface to my code please // Java Program interface University { public void add(int id, String name); } class Person { String name; int id; Person(String name, int id) { this.name = name; this.id = id; } } class Student extends Person { String Specialization; double gpa; Student(String name, int id, String Specialization, double gpa) { super(name, id); this.Specialization = Specialization; this.gpa = gpa; } } class Employee extends Person { String jop; int salary; Employee(String name, int id, String jop, int salary) { super(name, id); this.jop = jop; this.salary = salary; } } public class Main { public static void main(String[] args) { // creating the Objects of sub classes Student s = new Student("Ritika", 20, "CSE", 7.5); Employee e = new…
- In Java, Test file(Test.java) package for_vehicles; public class Test { public static void main(String[] args) { Automobile a1 = new Sedan("Honda", 4, 25, 5, "Civic", SedanType.SMALL, 4, 150.0); Automobile a2 = new Truck("Chevy", 4, 20, 3, "Silverado", 4, 13000, TruckTypes.PICKUP); TwoWheeler t1 = new Bicycle("Trek", 2, "Skye SLX", 10, 110, true, true); TwoWheeler t2 = new MotorCycle("BMW", 2, "R18", 761, 50, 91); Vehicle[] veharr = {a1, a2, t1, t2}; for(Vehicle v : veharr) { System.out.println(v.toString()); } System.out.println("The total number of Vehicles should be 4: "); System.out.println(Vehicle.numVehicles); } } The link for "here":…The following is in Java: public class MyClass { private int x; private double y; public static void setValues(int a, double b) { x = a; y = b; } } 1) What is the problem? 2) In a few sentences how can the issue be fixed?FOR JAVA Write a Java class named Book, which has a name, an author and a pub- lisher. This class must also have a static field (an array with length 100) which holds names of all constructed books, and a static method which returns the number of constructed books. You must also implement its constructors (one constructor with parame- ters, one default constructor), toString method, getters and setters.