Overriding is useful when a method has the same signature and type as a method in the parent class. a local variable has the same name as an instance variable. O you want to change the return type of a method. O a method has the same signature as another method in the same class.

Overriding is useful when a method has the same signature and type as a method in the parent class. a local variable has the same name as an instance variable. O you want to change the return type of a method. O a method has the same signature as another method in the same class.

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

Overriding is useful when
a method has the same signature and type as a method in the parent class.
O a local variable has the same name as an instance variable.
O you want to change the return type of a method.
O a method has the same signature as another method in the same class.

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The reference this can be used to refer to an object or to invoke another constructor of the same class. True False
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super is a special keyword that directs the compiler to invoke the superclass methods.
Overriding a method is defined as the ability to override the default method.
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When you pass an object that is an instance of a class as an argument, what is passed into the parameter variable?
You need a method to avoid accidental corruption of class fields.
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