Which of the following is a good example of a copy constructor that makes a deep copy?
Q: Which of the following classes will have more memory allocated?
A: Given: Which of the following classes will have more memory allocated?
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A: ANSWER: option 4 and option 5 are correct.
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A: Actually, the answer has given below:
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A: The correct answer along with the explanation is given below:
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A: GIVEN:
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A: The correct solution along with the explanation is given below.
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A: True
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OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
(Java)
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- Write a data type Domain that represents domain names,including an appropriate compareTo() method where the natural order is in order ofthe reverse domain name. For example, the reverse domain of cs.princeton.edu isedu.princeton.cs. This is useful for web log analysis. Hint: Use s.split("\\.") tosplit the string s into tokens, delimited by dots. Write a client that reads domain namesfrom standard input and prints the reverse domains in sorted order.Below I have a sample class written in java and have several methods. I have only written the skeleton code for sample. Implement a simple proxy design pattern using java so that clients should only have access to very basic methods, while administrators of the system should have access to all methods public class Student { private name; private ID; private Grade; public double getname () {} public string getID () {} public double calculateGrade() {} }Hi, can i please get assistance with the following Java class to read data below? Add anything relevant if needed only. The author and book classes is given if it is needed. As well as, the sample data file. public class Author { private String name; public Author (String name){ this.name= name; } public String toString(){ return name; } public boolean equals(Object obj){ return this.toString().equals(obj.toString()); } public int hashCode(){ return name.hashCode(); } } import java.util.*; public class Book { private String title;private double averageRating;private String ISBN;private int numPages;public Set<Author> authors;public Book(){authors=new HashSet<>(); //initialise authors}public Book(String title, double averageRating, String isbn, int numPages){this.title = title;this.averageRating = averageRating;this.ISBN = isbn;this.numPages = numPages;authors=new HashSet<>(); //initialise authors}//accessorspublic String getTitle(){return title;}public double…
- //PLEASE CORRECT MY MISTAKES, THANK YOUpublic class Person { private String personID; private String firstName; private String lastName; private String birthDate; private String address; public Person(){ personID = ""; firstName = ""; lastName = ""; birthDate = ""; address = ""; } public Person(String id, String first, String last, String birth, String add){ setPerson(id,first,last,birth,add); } public void setPerson(String id, String first, String last, String birth, String add){ personID = id; firstName = first; lastName = last; birthDate = birth; address = add; } public String getFirstName(){ return firstName; } public String getLastName(){ return lastName; } public String getBirthdate(){ return birthDate; } public String getAddress(){ return address; } public void print(){ System.out.print("\nPerson ID = " + personID); System.out.print("\nFirst Name = " +firstName); System.out.print("\nLast Name = " +lastName); System.out.print("\nBirth Date = " +birthDate);…Design a class named Point that meets the followingrequirements:■■ Two data fields x and y for representing a point with getter methods■■ A no-arg constructor that constructs a point for (0, 0)■■ A constructor that constructs a point with the specified x and y values■■ Override the equals method. Point p1 is said to be equal to point p2 ifp1.x = = p2.x and p1.y = = p2.y.■■ Override the hashCode method. (For reference, see the implementation of thePoint2D class in the Java API.)Which of the following cases is most like the adapter pattern? A. If you have an interface called Duck, and have many ducks that implement the duck interface. All of these ducks must have the behaviour “quack” but for some ducks, like a Mallard, this must result in a quack, where for a rubber duck it must result in a squeak. We decide to delegate the quack method to another interface, which can be implemented either in a concrete class that returns a quack or a concrete class that returns a squeak. B. None of these are like the adapter pattern. C. We have a large collection of Ducks. We want to look at them one by one and hear them quack. We write a piece of code that iterates through them all, and as we encounter each one, we have it invoke the quack method. D. If we have an interface called Duck. We need to give an object to a user that can quack like a duck. All we have is Turkeys. We create a special class that implements the duck interface, and to implement the quack…
- [JAVA] Please provide comments to my code import java.util.HashMap;public class Items {private final HashMap<String, Integer> allWeapons = setHash("weapon");private final HashMap<String, Integer> allArmor = setHash("armor");private final HashMap<String, Integer> allConsumables = setHash("consumable");public String type;public String name;public int modifier;public Items(String type) {randomItem(type);}public Items(String type, String name) {switch (type) {case "weapon":if (allWeapons.containsKey(name)) {this.type = "weapon";this.name = name;this.modifier = allWeapons.get(name);} else {randomItem(type);}break;case "armor":if (allArmor.containsKey(name)) {this.type = "armor";this.name = name;this.modifier = allArmor.get(name);} else {randomItem(type);}break;case "consumable":if (allConsumables.containsKey(name)) {this.type = "consumable";this.name = name;this.modifier = allConsumables.get(name);} else {randomItem(type);}break;default:randomItem(type);break;}}private…Which of the following cases is most like the strategy pattern? A. If you have an interface called Duck, and have many ducks that implement the duck interface. All of these ducks must have the behaviour “quack” but for some ducks, like a Mallard, this must result in a quack, where for a rubber duck it must result in a squeak. We decide to delegate the quack method to another interface, which can be implemented either in a concrete class that returns a quack or a concrete class that returns a squeak. B. If we have an interface called Duck. We need to give an object to a user that can quack like a duck. All we have is Turkeys. We create a special class that implements the duck interface, and to implement the quack method we simply call the turkey’s gobble method. C. None of these are like the strategy pattern. D. We have a large collection of Ducks. We want to look at them one by one and hear them quack. We write a piece of code that iterates through them all, and as we encounter…Write a class Student with the following attributes (make sure the attributes are private using name mangling): name: String id : Integer courses: List of Strings grades: List of Integers The class must include the following operations: A constructor that receives as input the name and id. Getters for each attribute. add_course(course: String, grade: Integer) : Bool -- This operation adds the course name to the list of courses and the grade to the list of grades. The method must confirm before adding that the course is a String and the grade is an Integer, otherwise the operation won't be performed. The method must return True if the course and grades were added, False otherwise. __str__() -- Should return the following information "Student name: <name> -- Courses passed: <number of courses passed>". Courses passed means courses with a grade equal to 60 or larger. Check the testcase for details. pass_ratio(): Float -- Returns the pass ratio as a percentage of…
- JAVA PROGRAM ASAP Please modify this program ASAP BECAUSE the program down below does not pass all the test cases when I upload it to hypergrade. The program must pass the test case when uploaded to Hypergrade. import java.util.HashMap;import java.io.BufferedReader;import java.io.FileReader;import java.io.IOException;import java.util.Scanner;public class MorseEncoder { private static HashMap<Character, String> codeMappings = new HashMap<>(); public static void main(String[] args) { initializeMappings(); Scanner textScanner = new Scanner(System.in); System.out.println("Please enter a string to convert to Morse code::"); String textForEncoding = textScanner.nextLine().toUpperCase(); if ("ENTER".equals(textForEncoding)) { System.out.println(); return; } String encodedOutput = encodeText(textForEncoding); System.out.println(encodedOutput); } private static void initializeMappings() {…Consider public class MyClass { public MyClass(){/code/} // more code… } To instantiate MyClass, you would write? MyClass mc = new MyClass(); MyClass mc = MyClass; MyClass mc = MyClass(); MyClass mc = new MyClass; public static int foo(int a, String s) { s = “Yellow”; a=a+2; return a; } public static void bar() { int a=2; String s = “Blue”; a = foo(a,s); System.out.println(“a=”+a+” s=”+s); } public static void main(String args[]) { bar(); } What is printed on execution of these methods? a = 4 s = Blue a = 5 s = Yellow a = 3 s = Yellow a =2 5 s = Blue What is true about private fields of a class? They must be used with private methods. They are accessible from anywhere inside or outside of a class. They can never be used in a class. They can be accessed only by methods inside the class they are associated with.What is the best first step to include in your implementation of equals(Object o) anytime you override it? Group of answer choices 1. Check if all instance variables of the invoking object and the input object are all equal. 2. Cast the passed in object as the class of the object invoking equals. 3.Check for identity (using ==). 4.Check if the invoking object (this) and the passed in object both implement the same interface, using instanceof. 5. No answer text provided.