class overload int x; double y; void add(int a , int b) { x - a + b; } void add(double c , double d) { y = c + d; overload() { this.x - 0; this.y - 0; } class Overload_methods { public static void main(String args[]) { overload obj = new overload (); int a - 2; double b - 3.2; obj.add(a, a); obj.add(b, b); System.out.println(obj.x + + obj.y);
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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 - PersonWrite the classes as shown in the following class diagram. Add a tester where you make an array of 5 person and ask the user to enter them. Then loop over the array and print them. The user may enter a Student, a Staff or even a Person. The ‘-‘ symbol means private field or method and ‘+’ means public. The classes Student and Staff inherit from PersonUse java programming language 1.1 Create a Student Object project. Create a Student class and use the provided UML diagram to code the instance fields, constructors and methods. Note: The module mark is the average of the participation mark and the examination mark - calculate this using the calcModuleMark() method. The determineStNumber() method should compile a student number with the first 3 letters of the student's name, a '#' symbol, and a 3-digit randomly generated number (make use of a for-loop to concatenate these 3-digits). The stNumber data field should be set in the constructor by calling the determineStNumber() method. The toString() method must compile a string to display the student number, participation mark, examination mark, and module mark, formatted in table format. Student number PMark EMark MMark Mar#9186 81 64 72.00 1.2 Create a testStudents class. Do the following: -Write a static method called display() which receives…
- Course Title: Modern Programming Language Please Java Language Code and Correct Code Please Question : Design an abstract class GeometricObject. GeometricObject must ensure that its children must implement calcArea() method. Design Rectangle18ARID2891 and CircleMJibranAkram Classes as children of GeometricObject class with overridden toString() method to return “Rectangle18ARID2891 with w Width and h Height is drawn” OR “CircleMJibranAkram with r Radius is drawn”. The attributes of Rectangle18ARID2891 are length, width. The attribute of CircleMJibranAkram is radius Hint: Area of circle=πr2 , Area of rectangle= width*lengthClass Die java.lang.Objectextended by Diepublic class Dieextends java.lang.ObjectDie - an n-sided die with given integer values. The given integer values are returned via nextRoll() with uniform probability., Constructor SummaryDie() Creates a new Die instance with the default values: 1, 2, 3, 4, 5, 6.Die(int[] outcomes) Creates a new Die instance with the given integer outcomes.Die(int sides, int min) Creates a new Die with a given number of sides and an incremental sequence of values beginning with a given minimum value.Method Summaryint nextRoll() nextRoll - return one of the die values at random.Methods inherited from class java.lang.Objectclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitConstructor DetailDie public Die(int[] outcomes)Creates a new Die instance with the given integer outcomes.Parameters:outcomes - an int[] value - an array of the integer values for each side of the die.Die public Die(int sides,int min)Creates a new Die with…Implement the above system using inheritance in the best possible way. Keep every object size as small as possible. Implement all methods (setter/getter/constructors and destructors) Note that the region area is 0 while the city is len*width and the country is the sum of their cities. Create array of countries called Arab of 22 countries. Write a function fill that fills the array Arab Write a method that finds the city that has the max area in a country Write a method that sorts the cities in a country from the largest to the smallest area Write a function that returns array of countries of the same area of Arab Write a function that compares between two countries. It returns true if country1 area greater than country2 area. Write a function to move a city from one country to another.
- Consider the following class hierarchy: class Animal { ... } class Mammal extends Animal { ... } class Cat extends Mammal { ... } Write a generic method printArray that takes an array of any type and prints each element of the array. If the element is an instance of Animal or its subclass, the method should call the toString method of the object to print its details. Otherwise, the method should simply print the element. Your method should have the following signature: public static <T> void printArray(T[] array)**JAVA LANGUAGE** beginner level import java. util.Arrays;import java.util.Scanner; Suppose that a Scanner object contains a bunch of tokens all on a single line separated by spaces. For example: 100.5 30.4 pizza 56.8 1000.3 8.2 Also suppose that you have a particular item that you know the price of. Let’s use the following example: Kindle: 99.99 Write a static method: public static double priceIsRight(Scanner s, double price) that takes a Scanner and an item price as parameters and returns the bid that is closest to the item price but not greater than the item price. If all bids are greater than the price, return 0.0. If there are no bids (Scanner is empty) return 0.0. You can assume the Scanner is not null. In the above example. 56.8 should be returned, since it is the number that is closest to 99.99 but not over 99.99. Notice that there may be some invalid tokens in the Scanner's input. The above example has pizza as one of its tokens, which is clearly not a valid bid. Your…Note: It`s python coding 1. Class Implementationa) Implement a class Rectangle with two attributes, width and height.b) Implement an init method with an optional parameter type. Set the default value of the attributes of width and height to 1.c) Implement a display method to print the values of width and height.d) Instantiate two objects of type rectangle, one with arguments one without. r1 = Rectangle(4, 5) r2 = Rectangle()e) Call display() to print width and height.Example OutputWidth: 4Height: 5Width: 1Height: 1
- package lab1; /** * A utility class containing several recursive methods * * <pre> * * For all methods in this API, you are forbidden to use any loops, * String or List based methods such as "contains", or methods that use regular expressions * </pre> * * */ public final class Lab1 { /** * This is empty by design, Lab class cannot be instantiated */ privateLab1(){ // empty by design } /** * Returns the product of a consecutive set of numbers from <code> start </code> * to <code> end </code>. * * @param start is an integer number * @param end is an integer number * @return the product of start * (start + 1) * ..*. + end * @pre. * <code> start </code> and <code> end </code> are small enough to let * this method return an int. This means the return value at most * requires 4 bytes and no overflow would happen. */ publicstaticintproduct(ints,inte){ if(s==e){ returne; }else{ returns*product(s+1,e); } }…in java create a class shopping mall. It has Items with name, manufacturer and price. Provide constructors. Getters, setters, toString methods. We add several items to Store. For that create a store class having name and array of items, Provide Constructors, getters/setters and toString(), in addition you have to provide a method add which add new item to the array. The main function that does these things looks as follows: Public static void main(Strings[] args) { Item shampoo2(“pantene”, “Procter & Gamble”,100), noodles(“Noodles”, “knorr”, 50); // add further items. Store abcSuperStore; abcSuperStore.add(shampoo2); abcSuperStore.add(noodles); … abcSuperStore.sale(shampoo2); a bcSuperStore.sale(noodles);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 =…