Given:abstract class A{{ }A() { }static int a;void methodA(){ }}cannot have anonymous instance initializer blockcannot have a constructorcannot have static variablesO everything is okay class A{void methodA(){}void methodB();}class B extends A{void methodA(){ }}class A should be abstractmethodB should be abstractboth a and bboth classes are okay

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

Answered: class Al void methodA(){ } void…

class Al void methodA(){ } void methodB(); } class B extends A{ void methodA(){ } } O class A should be abstract methodB should be abstract O both a and b both classes are okay

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter11: Advanced Inheritance Concepts

Section: Chapter Questions

Problem 3RQ

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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

Given:
abstract class A{
{ }
A() { }
static int a;
void methodA(){ }
}
cannot have anonymous instance initializer block
cannot have a constructor
cannot have static variables
O everything is okay

class A{
void methodA(){}
void methodB();
}
class B extends A{
void methodA(){ }
}
class A should be abstract
methodB should be abstract
both a and b
both classes are okay

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