Given an object that contains several adjectives as values, return a new object where you count the ocurrences of each adjective.
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- In this exercise, you are going to build on your Circleclass from the previous exercise. You are going to add 2 method, areaDifference and perimeterDifference. Both methods take a doubleradius of a second circle and return the difference from the current circle. For example, if you create a Circle object with a radius of 4 and call areaDifference(3), you will return the diffence between the area of a circle with radius 4 and the area of a circle with a radius of 3. perimeterDifferencewould be the same. Make sure you create at least one Circle and test and print the results of your methods. given: public class Circle{private double radius;public Circle(double theRadius){radius = theRadius;}// Add a method called area that returns the area of a circle// using Math.PIpublic double area(){return Math.PI*radius*radius;}// Add a method called perimeter that returns the perimeter of a// circle using Math.PIpublic double perimeter(){return Math.PI*2*radius;}}Write a compareTo method that compares two Song objects based on the artist, and title within artist. For example, given the following Songobjects: "Glass Animals""Heat Waves" "Elton John, Dua Lipa""Cold Heart" "Adele""Easy on Me" "Doja Cat""Kiss Me More" "Adele""My Little Love" They will be put in the following order: "Adele""Easy on Me" "Adele""My Little Love" "Doja Cat""Kiss Me More" "Elton John, Dua Lipa""Cold Heart" "Glass Animals""Heat Waves" In which class does the compareTo method belong?can you please help me with the last part of this code because I don't understand this; part of the code is below and the other part of the code is in the photo. question: In the LightsOutPuzzle class, write a method copy(self) that returns a new LightsOutPuzzle object initialized with a deep copy of the current board. Changes made to the original puzzle should not be reflected in the copy, and vice versa. >>> p = create_puzzle(3, 3)>>> p2 = p.copy()>>> p.get_board() == p2.get_board()True >>> p = create_puzzle(3, 3)>>> p2 = p.copy()>>> p.perform_move(1, 1)>>> p.get_board() == p2.get_board()False In the LightsOutPuzzle class, write a method successors(self) that yields all successors of the puzzle as (move, new-puzzle) tuples, where moves themselves are (row, column) tuples. The second element of each successor should be a new LightsOutPuzzle object whose board is the result of applying the corresponding move to the current…
- Can you implement the Student class using the concepts of encapsulation? A solution is placed in the "solution" section to help you, but we would suggest you try to solve it on your own first. You are given a Student class in the editor. Your task is to add two fields: ● String name ● String rollNumber and provide getter/setters for these fields: ● getName ● setName ● getRollNumber ● setRollNumber Implement this class according to the rules of encapsulation. Input # Checking all fields and getters/setters Output # Expecting perfectly defined fields and getter/setters. There is no need to add constructors in this class.I am trying to add int instance variables for the current hour and minutes of a clock, and I am trying to make them private. I am also trying to write getHour and getMinutes getter methods for these instance variables. I would like to know if I did this correctly and if not, I would like assistance as to what I could change. public class DigitalClock { private int currentHour; private int currentMinutes; public int getHour() { return currentHour; } public void setHour(int currentHour) { this.currentHour = currentHour; } public int getMinutes() { return currentMinutes; } public void setMinutes(int currentMinutes) { this.currentMinutes = currentMinutes;}}Improve the method printList to print out the details of all publications ordered on the category of the publications, and then on the title within each category. Note: currently there are only 2 categories, i.e. Book and Journal, but the project may be expended by adding other categories, e.g. Newspaper etc. Here are my four classes. public class Database {private ArrayList<Publication> publicationList; // An array list collection of publications /*** Create a new database*/public Database() {publicationList = new ArrayList<Publication>();} /*** Add a publication** @param publication The publication to be added*/public void addPublication(Publication publication) {if (publicationList.contains(publication)) {System.out.println("This publication has already been added to the list: " + publication);} else {publicationList.add(publication);}} /*** Get the total number of publications** @return The total number of publications*/public int getTotal() {return…
- In this exercise, you are going to complete the Rectangle class. You need to complete the class so that you can print and compare two rectangles. Once complete, use the RectangleTester to test the results. In the tester class, you are given 3 rectangles that you should print and compare. Sample results are provided below. Sample output A rectangle with a width of 5 and a height of 4 A rectangle with a width of 5 and a height of 4 A rectangle with a width of 10 and a height of 4 true false =========================================== public class RectangleTester{public static void main(String[] args){Rectangle rect1 = new Rectangle(5, 4);Rectangle rect2 = new Rectangle(5, 4);Rectangle rect3 = new Rectangle(10, 4);// Print all three rectangles// Print one true statement comparing rectangles// Print one false statment comparing rectangles}} =========================================== public class Rectangle{ private int width;private int height;public Rectangle(int width, int height) {}}) Modify the BookStore and BookSearchEngine classes explained in the class to include the following additional methods and test them:a) A method returning the book with the lowest price in the library.b) A method searching the library for Books of a given author and returning an ArrayList of such Books. c) A method returning an ArrayList of Books whose price is less than a given number.Giving the following code class Rectangle: def init (self, I, w): self.length = / self width = w def rectangle area(self): return self.length*self width def rectangle _perimeter(self): return (self.length+self.width)*2 RI = Rectangle(20, 12) print(Rl .rectangle_area()) print(Rl .rectangle_perimeter()) Answer the questions How many classes we have on the above example? What is the role of the method init (.)? How many methods are defined? How many objects are created? How we invoke any method. Cite an example from the above code? Instanciate 2 rectangles using your Rectangle class, and draw schema representing the namespaces
- Based on the information in the screenshots, please answer the following question below. The language used is Java and please provide the code for it with the explanation. Create a testing class named “PlanTest”. Under this class, there needs to be another static method besides the main method: You will need to create a static method named “prerequisiteGenerator” under “PlanTest”, which return a random 2D array containing prerequisite pairs (e.g., {{1, 3}, {2, 3}, {4, 2}}). The value range of a random integer is [0, 10] (inclusive). This method will accept an integer parameter, which specifies the length of the returned array: int[][] pre = prerequisiteGenerator(3); // possibly {{1, 3}, {2, 3}, {4, 2}} Under the main method, you will need to use prerequisiteGenerator to generate random prerequisite pair lists, and perform tests on plan method at least three examples by printing proper messages. Given 4 courses and prerequisites as [[1,0], [2,0], [3,1]] It is possible to take all…the techniwue in which we can strip individual variables off of an object for later use is called? exploding, listing, destructing, splittingIn this second exercise, we are going to look at the impact of overriding the equals and toString methods. Start by copying over your TestEquals class from the previous exercise. You will not need to make any changes to this code.(Already have copied over) Instead, you are going to add the following methods to your Ball class: public String toString() public boolean equals(Ball other) ===================================== public class TestEquals{public static void main(String[] args){System.out.println("** Object **");Object obj1 = new Object();Object obj2 = new Object();Object obj3 = obj1;// Print out all three objectsSystem.out.println(obj1);System.out.println(obj2);System.out.println(obj3);// Print a true statement using 2 objects and ==System.out.println(obj1==obj3);// Print a false statement using 2 objects and ==System.out.println(obj1==obj2);// Print a true statement using 2 objects and .equals()System.out.println(obj1.equals(obj3));// Print a false statement using 2 objects and…