Given the following code snippet: for(Circle c:circles) { System.out.println(c.toString()); } Select one: a. The compiler will call the toString( ) method of the parent class of class Circle if it is not defined in the Circle class b. The compiler will report an error if the toString( ) method is not defined in the Circle class c. The compiler will report an error if the toString( ) method is not overridden in the Circle class d. All of these

Given the following code snippet: for(Circle c:circles) { System.out.println(c.toString()); } Select one: a. The compiler will call the toString( ) method of the parent class of class Circle if it is not defined in the Circle class b. The compiler will report an error if the toString( ) method is not defined in the Circle class c. The compiler will report an error if the toString( ) method is not overridden in the Circle class d. All of these

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter11: Inheritance And Composition

Section: Chapter Questions

Problem 6PE

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In Python: Using class Point that you implemented in assignment 9, implement a class called ThreeDPoint that inherits class Point. The class has (other than the inherited x, and y) another integer named z. Class ThreeDPoint has the following: Default initializer, used to create objects of type ThreeDPoint, by default x, y, and z are set to 1. initializer with three parameters for x, y, and z. set and get methods for z. Override Method __str__, which returns a string that represent the ThreeDPoint (e.g., p = [4,5, 6]).
Modify the above code to use the alternative method for multithreading (i.e., implementing the Runnable interface). Name your main class RunnableHelloBye and your subsidiary classes Hello and Goodbye respectively. The fi rst should display the message ‘Hello!’ ten times (with a random delay of 0–2 s between consecutive displays), while the second should do the same with the message ‘Goodbye!’. Note that it will NOT be the main class that implements the Runnable interface, but each of the two subsidiary classes.
this is the whole problem i did 1 to 3 im stuck at 4 Create a class called Student, with the following attributes/variables:a. studentName (String)b. studentNumber (int)sc. regYear(long)d. faculty(String)e. department(String)2. Add the following methods in Student:a. accessors and mutators for all variablesb. toString methodi. Formulate your toString so that it only shows studentName,studentNumber and faculty3. Create a class called MyFriends, with the following attributes variables:a. studentArray(Student[])4. Add the following methods in MyFriends:a. fillArrayi. Using scanner ask how many students does the user want to inputii. Capture user input for all of his friends(Of course we are assuming all your friends would be similarUWC students, go ask around and meet new friends, alsopreferably not in the same Computer Science department … ifpossible … only if possible)b. maini. Call the fillArray methodii. Count how many Computer Science studentsiii. If half or more students are…
Given the following Imagine that is attached, select that all apply A. If the Other class extends the Base class then the method guessNumber() in Other overloads the method guessNumber in Base B. If the Other class extends the Base class then the method guessNumber() in Other overrides the method guessNumber in Base C. If the Base class implements MyInterface then it must implement the guessName method or declare it abstract. D. If the Base class implements MyInterface, then every class that extends the Base class also implements MyInterface. E. If the Other class extends the Base class, and implements MyInterface then the Base class also implements MyInterface F. MyInterface can have private methods specified.
All vehicles used for transportation in the U.S. must have identification, which varies according to the type of vehicle. For example, all automobiles have a unique Vehicle Identification Number (VIN) assigned by the manufacturer, plus a license plate number assigend by the state in which the auto is registerd. Your task is to modify the Auto class below to override the equals method of the Vehicle class to test that the VIN and license plate number are identical.
Please in pyth coding with correct indentation 4a) Given that you have a Liquid class that can be initialized with any amount of gallons, liters, ounces, etc, write the first line of the method that will allow you to add together two Liquid objects using operator overloading. Again, write ONLY the first line (method definition) – you do NOT have to write the entire method. 4b) Given that you have L1 and L2 which are instances of the Liquid class, write a line of code that uses operator overloading to add them together and assign the result to L3.
In this lab, you will construct a class called QuadraticSolver that will compute the real roots of a quadratic function (�(�) = ��! + �� + �).The class will implement the following methods.• A default constructor that initializes a legitimate quadratic function.• An overloaded constructor that takes the values of a, b, and c in the function �(�) = ��! +�� + �. This method throws a QuadraticException in the case where the input does not define a quadratic function.• A method that computes the discriminant (�! − 4��).• Boolean methods determining whether the solutions of the quadratic equation ��! + �� + � =0 have real or non-real solutions.• Two methods, one for each real root of the equation ��! + �� + � = 0. Each method will throw a NonRealException when the root is a non-real value.• A toString method that (reasonably) prints the quadratic function.The classes QuadraticException and NonRealException have been provided. Implement a main method in a separate class to test your…
Reuse your Car class . In a main, build an object of that class, and print out the object using System.out.println(). Notice that this simply reports the memory address of the object in question, and we’d like to do something more useful. To replace (or override) the toString (or equals) function. Now, build a toString function that prints out the make, model, and odometer reading for a vehicle object. public class Car { //instance variables private int odometer; private String make; private String model; //overloading //constructors public Car(int odometer,String make, String model) { this.odometer = odometer; this.make = make; this.model = model; } public Car(String make, String model) { this.make = make; this.model = model; } public Car(String make) { this.make = make; } /* *getter & setter methods */ public int getOdometer() { return odometer; } public void…
This is for python class, so please answer in python 9.12 LAB: Product class In main.py define the Product class that will manage product inventory. Product class has three attributes: a product code, the product's price, and the number count of product in inventory. Implement the following methods: A constructor with 3 parameters that sets all 3 attributes to the value in the 3 parameters set_code(self, code) - set the product code (i.e. SKU234) to parameter code get_code(self) - return the product code set_price(self, price) - set the price to parameter price get_price(self) - return the price set_count(self, count) - set the number of items in inventory to parameter count get_count(self) - return the count add_inventory(self, amt) - increase inventory by parameter amt sell_inventory(self, amt) - decrease inventory by parameter amt
Implement the design of the Pizza class so that the following output is produced:[Your code should work for any number of parameters added in the set_toppings_info method]# Write your codes here.print("Pizza Count:", Pizza.pizza_count)print("=======================")p1 = Pizza("Chicken")p1.set_toppings_info(25, 1, 4, 0)p1.display()print("------------------------------------")p2 = Pizza("Olives")p2.set_toppings_info(15, 1.5, 0, 0)p2.display()print("------------------------------------")p3 = Pizza("Sausage")p3.set_toppings_info(50, 5, 2, 0)p3.display()print("=======================")print("Pizza Count:", Pizza.pizza_count)Output:Pizza Count: 0=======================Toppings: Chicken25 calories1 g fat4 g protein0 g carbs------------------------------------Toppings: Olives15 calories1.5 g fat0 g protein0 g carbs------------------------------------Toppings: Sausage50 calories5 g fat2 g protein0 g carbs=======================Pizza Count: 3
in java Create a class for Student and implement all the below listed concepts in your class. Read lecture slides for reference. Class Name: Student 1. Data fields studentID name email majorDepartmentSelect proper datatypes for these variables. 2. Constructors – create at least 2 constructors No parameter With parametersSet id and name using the constructor with parameters. 3. Methods toString method : To print the details of the Student. Setter and getter methods 4. A static variable count : To keep the count of Student objects5. Visibility Modifiers: private for data fields and public for methods 6. Write some test cases in main method
Subject: Java Programming Hi Expert Sir, this (A, B) is one question...... please read and solve it carefully. and Don't submit the wrong answer. It's very important to me.... thank you Write a program to calculate the midpoint of two 2D coordinate points. A) Among them, the Point class represents two-dimensional coordinate points and has private member variables x and y, representing the values of the abscissa and ordinate, initialized by the constructor. B) Four methods setX (), getX (), setY (), and getY () are used to set and obtain the coordinates. In addition, a member method midPoint (Point p), which takes a Point object as a parameter, calculates the midpoint of the two coordinates and returns a new two-dimensional point. It is required to reflect the encapsulation characteristics in the program. Instantiate two two-dimensional points (4, 5) and (6, 8) in the main function of the class Test. Calculate the midpoint of the two by calling the midPoint of one of them and return…