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< Previous Next Class Relationships Exercises 1. In Java, we use inheritance for "is-a" relationships. Containment, on the other hand, indicates that one object has another object. These are "has-a" relationships. For the following relationships, determine if they are a "is-a" or a "has-a" relationship: o bicycle - vehicle o car - engine o pizza - topping o food - pizza o dog - mammal 2. Share with someone else 3 other examples for each of the following relationships: o Inheritance ("is-a" relationship) o Containment ("has-a" relationship) 3. public class PersonInfo { protected String firstName; protected String birthdate; public class ChildInfo extends PersonInfo { private String schoolName; ... public class MotherInfo extends PersonInfo { private String spousename; vate ChildInfo children1; private ChildInfo children2; private ChildInfo children3; ... A. Draw the relationships for the classes above using UML. If a class inherits from another class, draw an open arrow pointing to the base class from the derived class. If a class has another class as a variable, then draw a dashed line with an pointed arrow from the class that has the variable to the class that is used. B. Label each arrow with the type of relationship: 1. "is-a" 2. "has-a"

< Previous Next Class Relationships Exercises 1. In Java, we use inheritance for "is-a" relationships. Containment, on the other hand, indicates that one object has another object. These are "has-a" relationships. For the following relationships, determine if they are a "is-a" or a "has-a" relationship: o bicycle - vehicle o car - engine o pizza - topping o food - pizza o dog - mammal 2. Share with someone else 3 other examples for each of the following relationships: o Inheritance ("is-a" relationship) o Containment ("has-a" relationship) 3. public class PersonInfo { protected String firstName; protected String birthdate; public class ChildInfo extends PersonInfo { private String schoolName; ... public class MotherInfo extends PersonInfo { private String spousename; vate ChildInfo children1; private ChildInfo children2; private ChildInfo children3; ... A. Draw the relationships for the classes above using UML. If a class inherits from another class, draw an open arrow pointing to the base class from the derived class. If a class has another class as a variable, then draw a dashed line with an pointed arrow from the class that has the variable to the class that is used. B. Label each arrow with the type of relationship: 1. "is-a" 2. "has-a"

C++ Programming: From Problem Analysis to Program Design
C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter10: Classes And Data Abstraction
Section: Chapter Questions
Problem 13SA
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< Previous Next > Class Relationships Exercises 1. In Java, we use inheritance for "is-a" relationships. Containment, on the other hand, indicates that one object has another object. These are "has-a" relationships. For the following relationships, determine if they are a "is-a" or a "has-a" relationship: o bicycle - vehicle o car - engine o pizza - topping o food - pizza o dog - mammal 2. Share with someone else 3 other examples for each of the following relationships: o Inheritance ("is-a" relationship) o Containment ("has-a" relationship) 3. public class PersonInfo { protected String firstName; protected String birthdate; } public class ChildInfo extends PersonInfo { private String schoolName; } public class MotherInfo extends PersonInfo { private String spousename; private ChildInfo children1; private ChildInfo children2; private ChildInfo children3; ... } A. Draw the relationships for the classes above using UML. If a class inherits from another class, draw an open arrow pointing to the base class from the derived class. If a class has another class as a variable, then draw a dashed line with an pointed arrow from the class that has the variable to the class that is used. B. Label each arrow with the type of relationship: 1. "is-a" 2. "has-a"
Transcribed Image Text:< Previous Next > Class Relationships Exercises 1. In Java, we use inheritance for "is-a" relationships. Containment, on the other hand, indicates that one object has another object. These are "has-a" relationships. For the following relationships, determine if they are a "is-a" or a "has-a" relationship: o bicycle - vehicle o car - engine o pizza - topping o food - pizza o dog - mammal 2. Share with someone else 3 other examples for each of the following relationships: o Inheritance ("is-a" relationship) o Containment ("has-a" relationship) 3. public class PersonInfo { protected String firstName; protected String birthdate; } public class ChildInfo extends PersonInfo { private String schoolName; } public class MotherInfo extends PersonInfo { private String spousename; private ChildInfo children1; private ChildInfo children2; private ChildInfo children3; ... } A. Draw the relationships for the classes above using UML. If a class inherits from another class, draw an open arrow pointing to the base class from the derived class. If a class has another class as a variable, then draw a dashed line with an pointed arrow from the class that has the variable to the class that is used. B. Label each arrow with the type of relationship: 1. "is-a" 2. "has-a"
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