When a derived class method has the same name as a base class method, it is often said that the derived class method __________ the base class method. a. terminates b. cancels out c. overrides d. short circuits
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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:
When a derived class method has the same name as a base class method, it is often
said that the derived class method __________ the base class method.
a. terminates
b. cancels out
c. overrides
d. short circuits
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- Given the following code for a class named Employee, complete the following constructor public class Employee ( private int employeeID; private int SSN; public Emplyee(int employeeID, int SSN) {Create a base class called Insect. All insects belong to an Order [i.e. “Hemiptera” (ants), “Siphonaptera” (fleas), “Termitoidae” (termites), “Gryllidae” (crickets), etc.] and have a size that is measured in millimeters (use a double data type). Provide a default constructor that initializes the size to zero and outputs the message “Invoking the default Insect constructor” and another constructor that allows the Order and size to be set by the client. This other constructor should also output the message “Invoking the 2-argument Insect constructor.” Also create a destructor for this class that outputs the message “Invoking the default Insect destructor.” Your Insect class should have a function called Eat that cannot be implemented. That is, it should be declared as a purely virtual function. Your class should also have Get and Set methods to allow the order and size to be accessed.a) Write the declaration for class B. The members of the class should be as follows: m, an integer. This variable should not be accessible to code outside the class or to any class that extends class B. n, an integer. This variable should be accessible only to classes that extends class B or are in the same package as class B. setM, getM,setN, getN. These are the mutator aand accessor methods for the member variables m and n. These methods should be accessible to code outside the class. calc. This is a public abstract method. b) Write a declaration for class D, which extends class B. The members of the class are as follows: q, a double. This variable should not be accessible to code outside the class. r, a double. This variable should be accessible to any class that extends class D or is in the same package. setQ, getQ,setR, getR. These are the mutator aand accessor methods for the member variables q and r. These methods should be accessible to code outside the class. Calc, a…
- Derived classes can directly access what members of their base class? private public protected private and public public and protected protected and privateWhich is illegal.Single choice. public class classA extends classB public class classA extends classB,classC public class classA implements interfaceA public class classA implements interfaceA,inetrfaceBA class Person is given below as your base class. Your task is to create a class Employee which will contain objects of records for an employee and derived from the class Person. Guideline for an employee record: employee's name (which is inherited from the class Person) annual salary represented (type double) year the employee started work (type int) company ID number (type String) with a format of EMPXXX (where X are numbers) Create constructors and accessor methods which you think are needed for this program, as well as another method (print) to print out all the employee’s data once you call that method. Finally, create your TestEmployee class which will contain a main method to fully test your class definition. public class Person{ private String name; public Person(){ name = "No name yet."; } public Person(String n){ name = n; } public void setName(String newName){ name = newName; } public String getName(){ return name; } public void print(){…
- Examine the following code and select the correct statements (choose all possibleoptions): class Bottle {Bottle() {}Bottle(WaterBottle w) {}}class WaterBottle extends Bottle {WaterBottle() { }WaterBottle(Bottle w) { } } a) The class Bottle defines two overloaded constructors.b) The class WaterBottle defines two overloaded constructors.c) The class compiles successfully—a base class can use reference variables of its derived class as method parameters.d) Bottle and WaterBottle cause syntax errors.e) The class compiles successfully - A derived class can use reference variables of its base class as method parameters.f) A base class can’t pass reference variables of its defined class, as method parameters in constructors.Create a base class with two methods. In the first method, call thesecond method. Inherit a class and override the second method.Create an object of the derived class, upcast it to the base type, andcall the first method. Explain what happens.Task 3 question: Write code in Java with all these classes implementation and a program called Polymorphism_works with member method specific_Item which takes one instance of Item_in_Stock class as a parameter. Perform functionality of adding items, selling items and changing item price and displaying items details against specific item instance. There should be a main () method which declares an array of objects containing instance of sub classes of Item_in_Stock class and then calls methods of each of the implemented classes. More info: In this last and final part of the course work you are required to change the definition of the Item_in_Stock class to make it an abstract class and change the getItemCat(), getItemName() and getItemDescription() definitions to make them abstract methods. You are then required to design and implement three classes which are derived from Item_in_Stock class to fully demonstrate the concept of inheritance and polymorphism. Implementation of HP_Laptop…
- When a method in a subclass overrides a method in superclass, it is still possible to call the overridden method using super keyword. If you write super.func() to call the function func(), it will call the method that was defined in the superclass. You are given a partially completed code in the editor. Modify the code so that the code prints the following text: Hello I am a motorcycle, I am a cycle with an engine. My ancestor is a cycle who is a vehicle with pedals. import java.util.*;import java.io.*; class BiCycle{String define_me(){return "a vehicle with pedals.";}} class MotorCycle extends BiCycle{String define_me(){return "a cycle with an engine.";}MotorCycle(){System.out.println("Hello I am a motorcycle, I am "+ define_me()); //////code hereString temp=define_me(); //Fix this line and code here/////code ends here System.out.println("My ancestor is a cycle who is "+ temp );}}class Solution{public static void main(String []args){MotorCycle M=new MotorCycle();}}Create a base class called Vehicle with name, max_speed, and tank_size attributes. Then create a derived class called Truck that inherits from the Vehicle class. The Truck should have an additional attribute called seating_capacity with default value of 5. The child class should have a method named range to calculate fuel efficiency - the calculation should be: max_speed * seating_capacity * tank_size. Override the method such that it can accept 1, 2 or 3 positional arguments. Attached is my following code, also attached is a method for override method. Need help implementing the override method for the range to calculate the fuel effiency.C++ Program: Random Number Guesser. Write a derived class of the NumberGuesser class named RandomNumberGuesser. The derived class should override the behavior of the getCurrentGuess method. It may also add member data and its own constructor. It may also override the higher(), lower() and reset() methods as you see fit. To get everyone started off on the same page I have written a NumberGuesser class. It is defined entirely in-line in the following file: NumberGuesser.h (Links to an external site.) https://fog.ccsf.edu/~mluttrel/cs110b/NumberGuesser.h In the current NumberGuesser class the getCurrentGuess() method returns the midpoint of the range of possible values. In your RandomNumberGuesser class the getCurrentGuess() method should return a randomly generated number in the range of possible values. Note that repeated calls to getCurrentGuess() should always return the same value for both classes if neither the higher() or the lower() functions are called. Consider the…