Partial Question 3 Consider: class A { } public void doA() { } class B extends A { } public void doB () { } Which of the following are allowed? B x = new B(); x.doB(); A x = new A(); x.doA(); A x = new A(); x.doB(); B x = new B(); x.doA();

Q: class Al void methodA(){ } void methodB(); } class B extends A{ void methodA(){ } } O class A should…

A: 1. The correct option is- everything is okay Explanation: The given code is: abstract class A{ {}…

Q: class A {protected int x1,1,2; public: A(a, b,c):x1(a+2),y1(b-1),z(c+2) { for(i=0; i<5;i++)…

A: Explanation: Consider the given code.  The values of k, m, and n are 4, 2, and 5 respectively. The…

Q: Description: Create a class named ComparableDog that extends Animal and implements Comparable…

A: Find the required code in java given as below and output :

Q: Which of the following lists of instance data are accessible in A3? a) x, y, z, a, b, q b) a, b, q…

A: Given classes and their inheritance :-  Class A1 Class A2 derived from A1 Class A3 derived from A2

Q: Consider the following class definition: (8) class base { public: void setXYZ(int a, int b, int c) ;…

A: a) Member functions which are protected is :- setZ() void secret() and also one variable z is in…

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: