abstract class A{int a;int b;abstract void methodA();}class B extends A{int a;void methodA(){System.out.println("hi");super.methodA();}}the class cannot be abstractsuper must be the first linemethodA cannot be overridensuper cannot be used because the method is abstract class A{int a;int b;}class B extends A{int a;public static void main(String[] args){B obj=new B();}}How do you get access to the variable "a" in class A?use obj.ause obj.super.acreate an object of type A and then reference the variableO both b and c

Objective: Two questions are given on java inheritance and abstract class or method characteristics.…

abstract class A{ int a; int b; abstract void methodA(); class B extends A{ int a; void methodA(){ System.out.printIn("hi"); super.methodA(); O the class cannot be abstract super must be the first line O methodA cannot be overriden O super cannot be used because the method is abstract

abstract class A{ int a; int b; abstract void methodA(); class B extends A{ int a; void methodA(){ System.out.printIn("hi"); super.methodA(); O the class cannot be abstract super must be the first line O methodA cannot be overriden O super cannot be used because the method is abstract

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

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:

Question

abstract class A{
int a;
int b;
abstract void methodA();
}
class B extends A{
int a;
void methodA(){
System.out.println("hi");
super.methodA();
}
}
the class cannot be abstract
super must be the first line
methodA cannot be overriden
super cannot be used because the method is abstract

class A{
int a;
int b;
}
class B extends A{
int a;
public static void main(String[] args){
B obj=new B();
}
}
How do you get access to the variable "a" in class A?
use obj.a
use obj.super.a
create an object of type A and then reference the variable
O both b and c

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8. OOPS Theory #6 public class Car { public void horn() { System.out.println("Horn horn"); } } public class Ferrari extends Car { public void horn() { System.out.println("Ferarriiiiii"); } } public static void main(String[] args) { Ferrari ferrari = new Car(); ferrari.horn(); } Pick ONE option Horn horn Ferarriiii Cannot compile Runtime exception Clear Selection 9. OOPS Theory #7 In Java, we can achieve the abstraction by creating the blueprint of an object and only have abstract methods. What do we call this? Pick ONE option Interface Encapsulation Instance Protected Clear Selection
oop answer in essay form
Overriding a method is defined as the ability to override the default method.
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