Starting Out with Java: From Control Structures through Data Structures (3rd Edition)
3rd Edition
ISBN: 9780134038179
Author: Tony Gaddis, Godfrey Muganda
Publisher: PEARSON
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Expert Solution & Answer
Chapter 10.9, Problem 10.27CP
Explanation of Solution
Interface:
Interface is a reference type in Java, which contains a collection of abstract methods. It is very similar to class, but it cannot be instantiated, rather it is implemented by other classes.
An interface needs to the follow certain conditions such as:
- One cannot instantiate an interface.
- Interfaces do not contain any constructors...
Expert Solution & Answer
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Students have asked these similar questions
Create an interface named Playable that defines a method play requiring no return value. Play just displays the string “Play me.” Create a class named Instrument that implements playable that contains a private member name but does not implement the play of Playable.
a. define setter and getter for name
b. define a constructor that accepts a String name argument to be assigned to the name attribute of the class
c. override equals of the object for this class
d. override toString of an object for this class
3. Implement a concrete subclass of an instrument named Guitar.
a. Create a constructor similar to the default constructor provided by the system. See to it that the superclass object is created.
b. See to it that the abstract method is also implemented
c. override equals of the object for this class
d. override toString of the object for this class
You cannot instantiate an interface but you can do so to an abstract class.
True
False
Question 6
Create a set of classes and interface for the following scenario:
Define an interface called Classical Music, which contains a get Year method that
returns the year the classical album released.
Create an abstract class Called CD. This class contains the title as String, and
playingTime as integer (e.g. 60 minutes). Include a constructor to initialize all the data
fields. Create an abstract method called printPlayingTime to show the CD playing
details. Make sure all the data fields can be accessed directly from the child classes.
Create a class called Album that inherits from the CD and Classical Music. Include
a data field called year as integer type. Create a constructor to initialize all the data
members. Override the getYear method to return the released year. Override the
printPlayingTime method. If the CD title is more than 10 characters, this method
will print the first 10 characters, followed by the three ellipse dots and the playing
time. For example:
Thriller 60…
Chapter 10 Solutions
Starting Out with Java: From Control Structures through Data Structures (3rd Edition)
Ch. 10.1 - Here is the first line of a class declaration....Ch. 10.1 - Look at the following class declarations and...Ch. 10.1 - Class B extends class A. (Class A is the...Ch. 10.2 - Prob. 10.4CPCh. 10.2 - Look at the following classes: public class Ground...Ch. 10.3 - Under what circumstances would a subclass need to...Ch. 10.3 - How can a subclass method call an overridden...Ch. 10.3 - If a method in a subclass has the same signature...Ch. 10.3 - If a method in a subclass has the same name as a...Ch. 10.3 - Prob. 10.10CP
Ch. 10.4 - When a class member is declared as protected, what...Ch. 10.4 - What is the difference between private members and...Ch. 10.4 - Why should you avoid making class members...Ch. 10.4 - Prob. 10.14CPCh. 10.4 - Why is it easy to give package access to a class...Ch. 10.6 - Look at the following class definition: public...Ch. 10.6 - When you create a class, it automatically has a...Ch. 10.7 - Recall the Rectangle and Cube classes discussed...Ch. 10.8 - Prob. 10.19CPCh. 10.8 - If a subclass extends a superclass with an...Ch. 10.8 - What is the purpose of an abstract class?Ch. 10.8 - If a class is defined as abstract, what can you...Ch. 10.9 - Prob. 10.23CPCh. 10.9 - Prob. 10.24CPCh. 10.9 - Prob. 10.25CPCh. 10.9 - Prob. 10.26CPCh. 10.9 - Prob. 10.27CPCh. 10.9 - Prob. 10.28CPCh. 10 - In an inheritance relationship, this is the...Ch. 10 - In an inheritance relationship, this is the...Ch. 10 - This key word indicates that a class inherits from...Ch. 10 - A subclass does not have access to these...Ch. 10 - This key word refers to an objects superclass. a....Ch. 10 - In a subclass constructor, a call to the...Ch. 10 - The following is an explicit call to the...Ch. 10 - A method in a subclass that has the same signature...Ch. 10 - A method in a subclass having the same name as a...Ch. 10 - These superclass members are accessible to...Ch. 10 - Prob. 11MCCh. 10 - With this type of binding, the Java Virtual...Ch. 10 - This operator can be used to determine whether a...Ch. 10 - When a class implements an interface, it must...Ch. 10 - Prob. 15MCCh. 10 - Prob. 16MCCh. 10 - Abstract classes cannot ___________. a. be used as...Ch. 10 - You use the __________ operator to define an...Ch. 10 - Prob. 19MCCh. 10 - Prob. 20MCCh. 10 - You can use a lambda expression to instantiate an...Ch. 10 - True or False: Constructors are not inherited.Ch. 10 - True or False: in a subclass, a call to the...Ch. 10 - True or False: If a subclass constructor does not...Ch. 10 - True or False: An object of a superclass can...Ch. 10 - True or False: The superclass constructor always...Ch. 10 - True or False: When a method is declared with the...Ch. 10 - True or False: A superclass has a member with...Ch. 10 - True or False: A superclass reference variable can...Ch. 10 - True or False: A subclass reference variable can...Ch. 10 - True or False: When a class contains an abstract...Ch. 10 - True or False: A class may only implement one...Ch. 10 - True or False: By default all members of an...Ch. 10 - // Superclass public class Vehicle { (Member...Ch. 10 - // Superclass public class Vehicle { private...Ch. 10 - // Superclass public class Vehicle { private...Ch. 10 - // Superclass public class Vehicle { public...Ch. 10 - Write the first line of the definition for a...Ch. 10 - Look at the following code, which is the first...Ch. 10 - Write the declaration for class B. The classs...Ch. 10 - Write the statement that calls a superclass...Ch. 10 - A superclass has the following method: public void...Ch. 10 - A superclass has the following abstract method:...Ch. 10 - Prob. 7AWCh. 10 - Prob. 8AWCh. 10 - Look at the following interface: public interface...Ch. 10 - Prob. 1SACh. 10 - A program uses two classes: Animal and Dog. Which...Ch. 10 - What is the superclass and what is the subclass in...Ch. 10 - What is the difference between a protected class...Ch. 10 - Can a subclass ever directly access the private...Ch. 10 - Which constructor is called first, that of the...Ch. 10 - What is the difference between overriding a...Ch. 10 - Prob. 8SACh. 10 - Prob. 9SACh. 10 - Prob. 10SACh. 10 - What is an. abstract class?Ch. 10 - Prob. 12SACh. 10 - When you instantiate an anonymous inner class, the...Ch. 10 - Prob. 14SACh. 10 - Prob. 15SACh. 10 - Employee and ProductionWorker Classes Design a...Ch. 10 - ShiftSupervisor Class In a particular factory, a...Ch. 10 - TeamLeader Class In a particular factory, a team...Ch. 10 - Essay Class Design an Essay class that extends the...Ch. 10 - Course Grades In a course, a teacher gives the...Ch. 10 - Analyzable Interface Modify the CourseGrades class...Ch. 10 - Person and Customer Classes Design a class named...Ch. 10 - PreferredCustomer Class A retail store has a...Ch. 10 - BankAccount and SavingsAccount Classes Design an...Ch. 10 - Ship, CruiseShip, and CargoShip Classes Design a...
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