a. Describe the process of overriding a method from a superclass. b. Describe the isinstance method. c. Describe the Python ‘object’ class and the __str__(), __iter__(), and __next__() methods.
Q: Assuming the Employee class has a sayName method that returns the employee's name (which is Fred),…
A: => An object is a blueprint of a class in the object-oriented programming language. =>…
Q: 1. Write a program in Java using Bluej that performs the following tasks: Creates a class called…
A: Algorithm: Start Create a class Student with attributes name,Id,no and cname(representing college…
Q: 4. Supposed you would like to override a method with a default modifier in the superclass, which…
A: Rule for Access Modifier of overridden method : Access Modifier of the overriding method (method of…
Q: A method defining how to create a point: def __init__(self,x,y): self.x=y…
A: self keyword allows to access methods as well as attributes of a class.
Q: Data members 1 - Name 2 - Age 3 - Ph
A: Code : #include<iostream>using namespace std; /*Member is an abstract class since it has…
Q: Q2\A\ fill the blanks ( answer three) 1- The private part of Class called -------- and the public…
A: Here, I have to answer the above questions.
Q: (in java) Part A: Create a class named Insect, which includes the following: 1. Attributes…
A: Given: Part A: Create a class named Insect, which includes the following: 1. Attributes including:…
Q: 70. A constructor operation does which of the following? a. Creates a new instance of a class b.…
A: Given that, A constructor operation does which of the following? a. Creates a new instance of a…
Q: 9. Which of the following is FALSE about a subclass? A. A subclass has overridden methods from the…
A: Q19. subclass: the derived class (a class which is derived from another class) is known as the…
Q: Write the following code A class named Arithmetic with a method named add that takes integers as…
A: Inheritance is a process of acquiring the properties such as data members and member methods of one…
Q: 1. Creating overloaded methods with identical sets of parameters and different return types result…
A: Overloaded methods are differentiated based on the number and type of the parameters passed as an…
Q: java-Math is a class and the following notation is correct: Math.sqrt(4.77);…
A: to include the Math library, we use java.Lang.Math; Math is built in class provided by java which…
Q: 6- Which of the following is a correct interface? I. interface A { void methodX () { } } II.…
A: Solution : - (b)
Q: Q1: Suppose that we have a class named Classl and a class named Class2. Public Class Classl Dim…
A: Note: Answering the first three subparts as per the guidelines. Task : Given two classes: Class1…
Q: 1. Create 3-member inner classes with a method a1) with one statement System.out.print(“ Hi al0");…
A: Code public class Account { //Outer class Account public class…
Q: Q 3. Make a class Employee with a name and salary. Make a class Manager inherit from Employee. Add…
A: Given:
Q: 11. Suppose your program contains the following class definition: class myClass ( public:…
A: Your answer is given below with proper explanation.
Q: Q1) Given the following diagram, implement all the Classes and write a client code to test your…
A: ALGORITHM:- 1. Declare the classes and define their implementation. 2. Override the…
Q: Suppose that class Child extends class Parent, and that Parent does not explicitly extend another…
A: At the point when a child object is made and no contentions I passed then a super keyword is related…
Q: 3. Create a class called Employee whose objects are records for an employe e. This class will be a…
A:
Q: True or false?(a) You can override a nonprivate method defined in a superclass.(b) You can override…
A: a) All non-private methods are inherited by the sub-class from its super-class. A non-private…
Q: Build an abstract class named Salary that has the following: -One abstract method named…
A: Code: abstract class Salary{ abstract void calculateSalary(); void MinimumSalary() {…
Q: 4. If B is a subclass of class A. Given the following object: A a = new B0: Which of the following…
A: The correct answer option is provided below with explanation.
Q: Q1) Given the following diagram, implement all the Classes and write a client code to test your…
A: The code is given below.
Q: ollowing is correct? a. None of the other answers b. We know the name of its constructor(s) c. We…
A: Answer is given below-
Q: What will be the output of the following code? a. Compilation error in line 1 (abstract method…
A: The given code is: abstract class student{ private abstract void addStudent(); abstract void…
Q: 81. Which of the following is a technique for hiding the internal implementation details of an…
A: Question 81. Which of the following is a technique for hiding the internal implementation details of…
Q: Given the following Imagine that is attached, select that all apply A. If the Other class extends…
A: When Other class extending Base class, then Other class becomes Child class where as Base class…
Q: Q1) Given the following diagram, implement all the Classes and write a client code to test your…
A: The code is given below.
Q: What is true about private fields of a class? They must be used with private methods. They are…
A: Q.1 What is true about private fields of a class? They must be used with private methods. They are…
Q: Assume you have a method expecting the superclass's object to be passed as an argument. In this…
A: In Java, all non-static methods are based on the runtime type of the underlying object rather than…
Q: Write a Python Program A smart AC is a subclass of AC class, which relates to the Appliance…
A: class Appliance (object): # Constructor def __init__(self, brand_name, model_no,…
Q: 3. Create a class called BankAccount which has the following members- Private Name, id, accountType,…
A: Start. Create two object in the class BankAccount(). Declare the data members. Perform the…
Q: Which keyword is used to inherit a superclass into subclass? O a. extends O b. void O c. abstract O…
A: Actually, java is a object oriented programming language. It is a platform independent.
Q: Identify the cause of concern with the below piece of code. class Person(object): name = None def…
A: class Person(object): name=None #decalring class level static variable name def…
Q: QUESTION 2 What is the scope of a private instance variable? O Only the method in which the variable…
A: Given questions are the related to the Java and those are the multiple choice questions.
Q: Consider the following declarations: (1, 2, 5, 7) How many members does class foodType have?…
A: Note: since your question contain multiple sub-part but we can answer only 3 sub-part at time due to…
Q: QUESTION 9 Consider the following class definition: public class SomeClass { private int a; public…
A: The question is regarding the inheritance. Whenever we extend a class for another class, in Java,…
Q: a. Write the definition of the default constructor of YClass so that the instance variables of…
A: Describe Constructors and techniques A) The default constructor of YClass is defined as follow:…
Q: Write a program using the following hints in Superclass. a) Declare the field years with its…
A: As there is no programming language is mentioned so I did this question using java. Super: super…
Q: a.) Write the definition of the default constructor of YClass so that the instance variables of…
A: constructors are special function/method which are used to initialize values to instance variables…
Q: Write a program in Java using Bluej that performs the following tasks: i. Creates a class called…
A: Source code of the program is given below.Detailed comments are included for better understanding…
Q: What is the concept of binding? Differentiate between early binding and late binding. (Write in…
A: Solution : Binding refers to the process of converting identifiers (such as variable and performance…
Q: Which keyword is used to inherit a superclass into subclass? O a. implements O b. void c. abstract O…
A: Explaining options: a. implements this keyword is used to implement an interface i.e, abstract…
Q: 1. Create a class called test which has the following members- Private int x, int y Public -…
A:
Q: A method defined within a class and whose header does NOT include the static modifier is known as…
A: A class is a collection of methods and members and there are various types of methods and let's…
Q: Create a class called Line with the followings: 1. Private members: p1 and p2 as pointer to Point…
A: Creating the LINE class according to given specifications. #include <iostream>…
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:
CHAPTER 15
a. Describe the process of overriding a method from a superclass.
b. Describe the isinstance method.
c. Describe the Python ‘object’ class and the __str__(), __iter__(), and __next__() methods.
Trending now
This is a popular solution!
Step by step
Solved in 4 steps
- a. What is the concept of binding? Differentiate between early binding and late binding. (Write inmaximum 5 lines) [5 Marks]b. Write a Java operator/keyword, which can be used to check the validity of reference before attemptingdown-casting from superclass object to subclass reference. Given an example of it usage. (Write inmaximum 5 lines)Write a class named Employee which implements Comparable Interface with name and salary as data field. Add a constructor with argument name and salary. Add getter and Setter for name and salary. Add CompareTo() method for the data Name. Write a class named Manager which inherits the Employee class. Add an instance variable, named department, of type String. Add a constructor in the subclass class with arguments name, salary, department and a toString() method that prints the manager’s name, department, and salary [Hint: Add a toString( ) method in the super class as well] Create 3 objects of Manager with following arguments 1. (Zayed, 500), 2. ( Ahmed, 700) 3. ( Faisal, 600) Create an Array object Add the above 3 objects into an Array object and Sort by Name and Display Create an object Employee class with argument (Zayed, 500, IT) Display the 1. Name 2. Salary 3. Department by using tostring() method.Write a class named Employee which implements Comparable Interface with name and salary as data fields Add a constructor with argument name and salary. Add getter and Setter for name and salary. Add CompareTo() method for the data Salary. Write a class named Manager which inherits the Employee class. Add an instance variable, named department, of type String. Add a constructor in the subclass class with arguments name, salary, department and a toString() method that prints the manager’s name, department, and salary [Hint: Add a toString( ) method in the super class as well] Create 3 objects of Manager with following arguments 1. (Zayed, 500), 2. ( Ahmed, 700) 3. ( Faisal, 600) Add the above 3 objects into an ArrayLIst object and Sort by Salary and Display. Create an object Employee class with (Zayed, 500,IT) and display the 1. Name 2. Salary 3. Department by using tostring() method.
- The xxx_Pet classA Pet has a:– Name• Include an instance variable• Getters and setters for an instance variable• A toString method which returns a String containing the pet name Abstract methods: speak() and move()The subclassesWrite a dog, cat, snake subclasses with proper instant variables and methodsWrite a class xxx_TestPet which will1- Create a dog, a snake, and a cat objectsSample OutputPet Fido is a dog, weighing 45 poundsFido says woofrun Fido runPet Sam is a snake, 30 inches longSam says hissslither Sam slitherPet Hershey is a cat, with Long hairHershey says Meowprance Hershey prance2- Print just the weight of the Dog, the length of the Snake and the hair length of theCat as shown belowFido weighs 45 poundsSam has length 30 inchesHershey has Long hair 3- Store the objects in an Array of Pet objects and print the information belowPet D1 is a dog, weighing 55 poundswoofrunPet S1 is a snake, 30 inches longhissslitherPet C1 is a cat, with Long hairmeowprancePet D2 is a dog,…1. Creating overloaded methods with identical sets of parameters and different return types result in compilation errors. Overloaded methods must have different sets of parameters- also known as signatures. Is it True or False? 2. Attempting to modify a final instance variable after it is initialized is a compilation error. Is it True or False? 3. A subclass can effect state changes in superclass private members only through public, protected methods provided in the superclass and inherited into the subclass. Is it True or False?Python:Please read the following. The Game class The Game class brings together an instance of the GameBoard class, a list of Player objects who are playing the game, and an integer variable “n” indicating how many tokens must be aligned to win (as in the name “Connect N”). The game class has a constructor and two additional methods. The most complicated of these, play, is provided for you and should not be modified. However, you must implement the constructor and the add_player method. __init__(self,n,height,width) The Game constructor needs to initialize three instance variables. The first, self.n, simply holds the integer value “n” provided as a parameter. The second, self.board, should be a new instance of the GameBoard class (described below), built using the provided height and width as dimensions. The third, self.players, should be an initially empty list. add_player(self,name,symbol) The add_player method is provided a name string and a symbol string. These two values should be…
- 1)Create a complete Java class that can be used to create a Computer object as described below:A Computer has a:- Manufacturer- Disk Size- Manufacturing Date- Number of coresa) Add all instance variables (data encapsulation is expected).b) The class must have getters and setters for all instance variables.c) The class must have two constructors: a no-arg constructor and a constructor thatreceives input parameters for each instance variable.d) Implement a toString() method for your class. 2)Write a Java program TestComputer, which creates three Computer objects with the informationbelow:a) - Manufacturer: Dell- Disk Size: 1189160321024 bytes- Manufacturing Date: April 1, 2020- Number of cores: 2b) - Manufacturer: Apple Inc- Disk Size: 269283712040 bytes- Manufacturing Date: March 31, 2020- Number of cores: 4c) Create your own Object. You can mimic your actual personal computer or use a no-argsconstructor.Print the three objects using toString() method to show all data fields[12] Consider the following: class Point(): # A method defining how to create a point: def __init__(self,x,y): self.x=y self.y=y # ways to represent the objects as string def __str__(self): return f”({self.x},{self.y})” a_point=Point(2,3) print(a_point) The code above implements a class named 'Point' representing points on a cartesian plane. What is the purpose of the "self" keyword when defining an instance or calling instance methods? a. self refers to the instance whose method was called. b. self refers to the class that was inherited from to create the object using self. c. self means that no other arguments are required to be passed into the method. d. There is no real purpose for the self method; it's just historic computer science jargon that Python keeps to stay consistent with other programming languages.1 - Student class Make a class student (in student.py) that stores the following information for a student: Name (name) Student number (student_nr) Points per assignment (points_per_assignment) Exam grade (exam_grade) a) Behind each point of information is the name of the parameter to the initializer method. Store this information from the parameters in the object attributes with the same name. b) Add a method course_points() which returns the number of course points the student has gotten. Example: mary = Student("Mary", 15789613, [10, 9, 8, 10, 9, 10], 9)print(mary.course_points()) > 121 The calculation of the course points is explained in the course overview, course setup slides (Links to an external site.) and the first lectureLinks to an external site.. c) Add a method grade() which returns a the final grade of the student, rounded to nearest half (upwards, 6.75 -> 7). As per regulations, a 5.5 becomes a 6. If the student did not pass both the assignments (>= 95…
- Fill in the blank space 1. The ____________ keyword is used to create a new instance or object of a class 2. ______________ is the concept of closely controlling access to an object's attributes and is also called information hiding 3. A ____________ is a method that is used 5o set the initial state of an object when it is created. 4. (i) Method _________ is the process of changing the number and type of parameters of a method (ii) Method __________ is the process of replacing a method in a superclass with a new implementation in the subclass 5. A ______________ expression is an expression that evaluates to either true or false. 6. In Java polymorphism means that a class or object can be treated as multiple different types. Which of the following statements regarding polymorphism in Java are true? Select all that apply. A. A subclass can be treated as any of it's ancestor (super) classes. B. A Java class can be treated as any interface it implements C. A Java class can be treated…Create a class called testThis with a main function. In the main function, create two objects of the above class (thisClass), called s1 and s2, and pass values to their constructors that conform to their appropriate datatypes specified in the class.You have a method that requires an argument that is an instance of the superclass, and it expects you to provide it. It will function properly if you provide it with an object of a subclass rather than a superclass. Is it even possible? Where is the value in that?