JAVA PROGRAM (SEE ATTACHED PHOTO FOR THE PROBLEM) What is the output of the program code? Use comma to denote nextline. Separate your answers using comma with no spaces.
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JAVA PROGRAM (SEE ATTACHED PHOTO FOR THE PROBLEM)
What is the output of the program code? Use comma to denote nextline. Separate your answers using comma with no spaces.
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- Polymorphism in Java In the class “Phone”, there is a method call() which in default prints “Calling Emergency services…”. Override this method by accepting a string called number. Accept for a number as input. If input is 0, call the default method. Inputs 1. A string 1234567 Sample Output Enter number: 1234567 Calling number 1234567...JAVA Implement the equals method of the Arrow class. Two arrows are equal when they have the same starting point and direction. public class Arrow{ private Point start; private String direction; /** Constructs an arrow. @param x the x-position @param y the y-position @param direction a compass direction N E S W NE NW SE SW */ public Arrow(int x, int y, String direction) { start = new Point(); start.move(x, y); this.direction = direction; } /** Checks whether this arrow is equal to another. @param otherObject another arrow @return true if this arrow and otherObject have the same position and direction. */ public boolean equals(Object otherObject) { /* code goes here */ }}JAVA A Matryoshka, or Russian nesting doll is either solid or hollow. If it is hollow, it contains another doll (which can also be hollow or solid). Given the supplied Doll class, implement a recursive method named show that returns a String representing the chain for dolls, for example Natasha contains Tanya contains Peter public class Doll{ private String name; private Doll dollInside; /** * Constructs a hollow doll with the doll it contains. */ public Doll(String theName, Doll theDoll) { name = theName; dollInside = theDoll; } /** * Constucts a solid doll. */ public Doll(String theName) { name = theName; dollInside = null; } public boolean isSolid() { return dollInside == null; } public String getName() { return name; } public Doll getDollInside() { return dollInside; }} public class DollViewer{ public static String show(Doll d) { /* code goes here */ } public static void main (String [] args) { Doll dolls1 =…
- 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!AFTERin java language... Draw the UML diagram of the following class: public class Employee { String name; double salary; public Employee() { } public double getSalary() { return this.salary; } public String getName() { return this.name; } }USING JAVA: Part A) Implement a superclass Appointment and subclasses Onetime, Daily, and Monthly. An Appointment has a description (for example, “See the dentist”) and a date. Write a method, occuresOn(int year, int month, int day) The check whether the appointment occurs on that date. For example, for appointment, you must check whether the day of the month matches. This fill an array of Appointment objects with a mixture of appointments. Have the user enter a date and print out all appointments that occur on that date. Part B) Improve the appointment book by giving the user the option to add new appointments. The user must specify the type of the appointment, the description, and the date.
- Modify the given codes to remove the compilation errors. 1. public interface Carnivore { int pieces = 10; public static void eatGrass(); public int chew() { return 13; } } 2. Interface HasWings { public int getNumberOfWings(); } abstract class Insect implements HasWings { abstract int getNumberOfLegs(); } public class Dragonfly extends Insect { int getNumberOfLegs() { return 6; } }what is the output of the following codes : code 1. class A { { System.out.print(1); } } class B extends A { { System.out.print(2); } } class C extends B { { System.out.print(3); } } public class MainClass { public static void main(String[] args) { C c = new C(); } } code 2 class M { int i; public M(int i) { this.i = i--; } } class N extends M { public N(int i) { super(++i); System.out.println(i); } } public class MainClass { public static void main(String[] args) { N n = new N(26); } } code 3 class M { int i; public M(int i) { this.i = i--; } } class N extends M { public N(int i) { super(++i); System.out.println(i); } } public class MainClass { public static void main(String[] args) { N n = new N(26); } }Draw the UML diagram for the classes and its relationships for this code: import java.util.ArrayList;public class Main { public static void main(String[] args) {Market superMarket = new Market(10);}class Market { private ArrayList<String> fruits = new ArrayList<>(); private int fruitsNumber; public Market(int fruitsNumber) { if (fruitsNumber > 0) { this.fruitsNumber = fruitsNumber; }else { throw new IllegalArgumentException("This argument is not valid"); } } private synchronized boolean isFull() { return fruits.size() == this.fruitsNumber; } private synchronized boolean isEmpty() { return fruits.isEmpty(); } public synchronized void farmer(String fruit) { if (isFull()) { System.out.println("We can not accept more fruites at the moment !!"); try { wait(); }catch (InterruptedException e) { System.out.println("Interruption"); } } fruits.add(fruit); System.out.printf("fruit : %s is added !!!%n", fruit); }…
- 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.Draw the UML class diagrams for the following classes: An abstract Java class called Person that has the following attributes: a String called idNumber a Date called dateOfBirth representing the date of birth. a String for name A class called VaccineRecord with the following attributes: an enum called type of VaccineType a Date called date a String called batchCode A class called Patient that extends the Person class and has the following attributes and behaviours: an ArrayList that contains VaccineRecord objects called vaccinationRecord a public method called vaccinate that takes a VaccineRecord with the following signature: public void vaccinate(VaccineRecord vaccineRecord); a public boolean method called isVaccinated that returns whether or not the Patient has had a vaccine. A MedicalPractitioner class that extends the Person class and has the following attributes and behaviours: a String called licenseCode a public method called vaccinatePatient that takes as a…Draw the UML class diagrams for the following classes: An abstract Java class called Person that has the following attributes: a String called idNumber a Date called dateOfBirth representing the date of birth. a String for name A class called VaccineRecord with the following attributes: an enum called type of VaccineType a Date called date a String called batchCode A class called Patient that extends the Person class and has the following attributes and behaviours: an ArrayList that contains VaccineRecord objects called vaccinationRecord a public method called vaccinate that takes a VaccineRecord with the following signature: public void vaccinate(VaccineRecord vaccineRecord); a public boolean method called isVaccinated that returns whether or not the Patient has had a vaccine. A MedicalPractitioner class that extends the Person class and has the following attributes and behaviours: a String called licenseCode a public method called vaccinatePatient that takes as a…