A new class of objects can be created conveniently by inheritance—the new class (called the ________) starts with the characteristics of an existing class (called the ________), possibly customizing them and adding unique characteristics of its own. superclass, subclass hyperclass, subclass target, superclass subclass, superclass QUESTION 7 With ________ software development, individuals and companies contribute their efforts in developing, maintaining and evolving software in exchange for the right to use that software for their own purposes, typically at no charge. object-oriented high-level open-source proprietary

A new class of objects can be created conveniently by inheritance—the new class (called the ) starts with the characteristics of an existing class (called the ), possibly customizing them and adding unique characteristics of its own. superclass, subclass hyperclass, subclass target, superclass subclass, superclass QUESTION 7 With software development, individuals and companies contribute their efforts in developing, maintaining and evolving software in exchange for the right to use that software for their own purposes, typically at no charge. object-oriented high-level open-source proprietary

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter10: Introduction To Inheritance

Section: Chapter Questions

Problem 2RQ

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A new class of objects can be created conveniently by —----------the new class (called the subclass) starts with the characteristics of an existing class (called the superclass), possibly customizing them and adding unique characteristics of its own.
Question 4 A class that inherits from another class is referred to as a(n) O subclass O base class O inheritance O O Mark this question instance
True or False ___(31) Key word implements is used to define a subclass from a super class. ___(32) Key word extends is used to define a subclass from an interface. ___(33) Inheritance in Java promotes code reuse.
C#(Sharp): In an inheritance relationship, the ________________ is the general class Base class Master class Derived class Parent class
• Define a base class shapeClass , the class o Has two data members width and height , which are integers o Has two member functions setWidth and setHeight , which are used to change the two data members • Define a new class rectangleClass which is derived from the base class shapeClass , the class o Has a member function getArea , which calculates the area • In the main function, create an object of rectangleClass , set its width and height, and then calculate its area using member function.
True or False:Unlike other members of a superclass, constructors of a superclass are not inherited by its subclasses. This means that you must define a constructor for a class or use the default constructor added by the compiler.
In Java, inheritance is a mechanism that allows a subclass to ________ the properties and methods of a superclass.
4) True or False Inheritance allows a subclass to inherit properties and methods from a superclass 5) True or False A class can implement multiple interfaces. 6) What is the syntax for extending a class in Java? class Superclass extends Subclass class Subclass extends Superclass None class Subclass implements Superclass
10 A class has to necessarily be declared as abstract class if O A class overrides a method from super class. O A class inherits from an abstract class. O A class does not implements all the methods declared abstract in the super class A class implements more than one interface. Activate W Go to Setting 11 36°C Haze A 4) O 10
A base class’s ____________members can be accessed in the base-class definition, in derivedclass definitions and in friends of the base class its derived classes.
True or False ___(34) The has-a relation between two classes (such as class A has class B) leads to inheritance where class B can inherit properties from class A. ___(35) When a user adds a user-defined constructor a class, the default constructor is no longer available unless it is explicitly defined again in the class. ___(36) If class B is a child class of class A, when you create an object from class B, only the constructor of class B is used to create the object.
When deriving a class with public inheritance, public members of the base class become _________members of the derived class, and protected members of the base classbecome______________ members of the derived class.