Class AudioBook

java.lang.Object

com.university.bookstore.model.Material

com.university.bookstore.model.AudioBook

All Implemented Interfaces:

Media, Comparable<Material>

public class AudioBook
extends Material
implements Media

Represents an audio book that implements both Material and Media interfaces. Demonstrates multiple inheritance through interfaces.

Since:

2024-09-15

Version:

2.0

Author:

Navid Mohaghegh

Nested Class Summary

Nested classes/interfaces inherited from class com.university.bookstore.model.Material

Material.MaterialType

Nested classes/interfaces inherited from interface com.university.bookstore.model.Media

Media.MediaQuality

Constructor Summary

Constructors

Constructor	Description
AudioBook(String isbn, String title, String author, String narrator, double price, int year, int duration, String format, double fileSize, Media.MediaQuality quality, String language, boolean unabridged)	Creates a new AudioBook with full specifications.

Method Summary

Modifier and Type	Method	Description
int	calculateListeningSessions(int minutesPerDay)	Calculates listening sessions based on daily listening time.
int	getAdjustedDuration(double speed)	Gets playback speed adjusted duration.
String	getAuthor()	Gets the author.
String	getCreator()	Abstract method to get the creator/author/artist of the material.
double	getDiscountRate()	Hook method for discount rate.
String	getDisplayInfo()	Abstract method to get a formatted display string.
int	getDuration()	Gets the duration of the media in minutes.
double	getFileSize()	Gets the file size in megabytes.
String	getFormat()	Gets the file format of the media.
String	getIsbn()	Gets the ISBN.
String	getLanguage()	Gets the language.
String	getNarrator()	Gets the narrator.
Media.MediaQuality	getQuality()	Gets the quality setting for the media.
boolean	isStreamingOnly()	Checks if the media requires an internet connection.
boolean	isUnabridged()	Checks if unabridged.
String	toString()

Methods inherited from class com.university.bookstore.model.Material

compareTo, equals, getDiscountedPrice, getId, getPrice, getTitle, getType, getYear, hashCode

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.university.bookstore.model.Media

estimateDownloadTime, getPlaybackInfo

Constructor Details

AudioBook

public AudioBook(String isbn,
 String title,
 String author,
 String narrator,
 double price,
 int year,
 int duration,
 String format,
 double fileSize,
 Media.MediaQuality quality,
 String language,
 boolean unabridged)

Creates a new AudioBook with full specifications.

Parameters:

isbn - ISBN identifier

title - book title

author - original author

narrator - voice narrator

price - price in dollars

year - publication year

duration - duration in minutes

format - audio format (MP3, M4B, etc.)

fileSize - size in megabytes

quality - audio quality level

language - narration language

unabridged - true if unabridged version

Method Details

getCreator

public String getCreator()

Description copied from class: Material

Abstract method to get the creator/author/artist of the material. Implementation varies by material type.

Specified by:

getCreator in class Material

Returns:

the creator's name

getDisplayInfo

public String getDisplayInfo()

Description copied from class: Material

Abstract method to get a formatted display string. Each material type should provide its own formatting.

Specified by:

getDisplayInfo in class Material

Returns:

formatted display string

getDuration

public int getDuration()

Description copied from interface: Media

Gets the duration of the media in minutes.

Specified by:

getDuration in interface Media

Returns:

duration in minutes

getFormat

public String getFormat()

Description copied from interface: Media

Gets the file format of the media.

Specified by:

getFormat in interface Media

Returns:

format string (e.g., "MP3", "MP4", "WAV")

getFileSize

public double getFileSize()

Description copied from interface: Media

Gets the file size in megabytes.

Specified by:

getFileSize in interface Media

Returns:

size in MB

isStreamingOnly

public boolean isStreamingOnly()

Description copied from interface: Media

Checks if the media requires an internet connection.

Specified by:

isStreamingOnly in interface Media

Returns:

true if streaming required, false if downloadable

getQuality

public Media.MediaQuality getQuality()

Description copied from interface: Media

Gets the quality setting for the media.

Specified by:

getQuality in interface Media

Returns:

quality descriptor

getDiscountRate

public double getDiscountRate()

Description copied from class: Material

Hook method for discount rate. Default is no discount. Subclasses can override to provide type-specific discounts.

Overrides:

getDiscountRate in class Material

Returns:

discount rate between 0.0 and 1.0

calculateListeningSessions

public int calculateListeningSessions(int minutesPerDay)

Calculates listening sessions based on daily listening time.

Parameters:

minutesPerDay - daily listening time

Returns:

number of days to complete

getAdjustedDuration

public int getAdjustedDuration(double speed)

Gets playback speed adjusted duration.

Parameters:

speed - playback speed (1.0 = normal, 1.5 = 1.5x, etc.)

Returns:

adjusted duration in minutes

getIsbn

public String getIsbn()

Gets the ISBN. @return the ISBN

getAuthor

public String getAuthor()

Gets the author. @return the author

getNarrator

public String getNarrator()

Gets the narrator. @return the narrator

getLanguage

public String getLanguage()

Gets the language. @return the language

isUnabridged

public boolean isUnabridged()

Checks if unabridged. @return true if unabridged

toString

public String toString()

Overrides:

toString in class Material