Given:interface B{B () { }{ }void methodA();}cannot have a constructorcannot have an instance initializermethodA must have a bodyboth a and b Given:interface Bvoid methodA();class C implements B{void methodB(){ }}everything is finemethodA should be overriden in class CO class C should be abstractO either b or c

Disclaimer : Answering only for the first one : We cannot have a constructor within an interface in…

Answered: Given: interface B B){} {} void…

Given: interface B B){} {} void methodA(); cannot have a constructor cannot have an instance initializer methodA must have a body O both a and b

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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Question

Given:
interface B
{
B () { }
{ }
void methodA();
}
cannot have a constructor
cannot have an instance initializer
methodA must have a body
both a and b

Given:
interface B
void methodA();
class C implements B
{
void methodB(){ }
}
everything is fine
methodA should be overriden in class C
O class C should be abstract
O either b or c

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