IN JAVA PLEASE 1 Write a fully documented class named SongRecord which contains information about a particular audio file It should have member variables for the title and artist (both strings) as well as two member variables for the song's length in minutes and seconds (both ints) You should provide accessor and mutator methods for each variable as well as a default constructor For the mutator method of the seconds variable, you should throw an exception if the new value is less than 0 or greater than 59 For the mutator method of the minutes variable, you should throw an exception if the new value is negative Finally, you should provide a toString() method that neatly prints the information about the audio file on a single line as shown below in the sample output 2 Write a fully documented class named Playlist that stores all SongRecord objects that belong to a particular playlist The SongRecord objects should be stored in an array There should be a maximum of 50 SongRecord objects allowed, a number which should be defined as a final variable The class will be based on the following ADT specification public class Playlist The Playlist class implements an abstract data type for a playlist of audio files supporting common operations on such lists of audio files Constructor for Playlist public Playlist() Construct an instance of the Playlist class with no SongRecord objects in it Postcondition This Playlist has been initialized to an empty list of SongRecords clone public Object clone() Generate a copy of this Playlist Returns The return value is a copy of this Playlist Subsequent changes to the copy will not affect the original, nor vice versa Note that the return value must be typecast to a Playlist before it can be used equals public boolean equals (Object obj) Compare this Playlist to another object for equality Parameters obj an object in which this Playlist is compared Returns A return value of true indicates that obj refers to a Playlist object with the same SongRecords in the same order as this Playlist Otherwise, the return value is false Note If obj is null or it is not a Playlist object, then the return value is false Note When comparing equality between two SongRecord objects, you must verify that their titles, artists, and song lengths are all the same Using the operator will simply check to see if the two variables refer to the same SongRecord object, which does not take into consideration that two different SongRecord objects can actually represent the same audio file To solve this problem, you can either check that each of the properties of the two objects are the same (title, artist, and length) inside of this method, or you may simplify this process by implementing an equals method (similar to this one) for the SongRecord class size public int size() Determines the number of SongRecords currently in this Playlist Preconditions This SongRecord object has been instantiated Returns The number of SongRecords in this Playlist addSong public void addSong(SongRecord song, int position) Parameters song the new SongRecord object to add to this Playlist position the position in the playlist where the song will be inserted Preconditions This SongRecord object has been instantiated and 1 position songs currently in playlist 1 The number of SongRecord objects in this Playlist is less than max songs Postcondition The new SongRecord is now stored at the desired position in the Playlist All SongRecords that were originally in positions greater than or equal to position are moved back one position (Ex If there are 5 songs in a Playlist, positions 1 5, and you insert a new SongRecord at position 4, the new SongRecord will now be at position 4, the SongRecord that was at position 4 will be moved to position 5, and the SongRecord that was at position 5 will be moved to position 6) Throws IllegalArgumentException Indicates that position is not within the valid range FullPlaylistException Indicates that there is no more room inside of the Playlist to store the new SongRecord object Note 1 position refers to the position in the Playlist and not the position inside the array Note 2 Inserting a song to position (songs currently in playlist 1) is effectively the same as adding a song to the end of the Playlist removeSong public void removeSong(int position) Parameters position the position in the playlist where the song will be removed from Preconditions This SongRecord object has been instantiated and 1 position songs currently in playlist Postcondition The SongRecord at the desired position in the Playlist has been removed All SongRecords that were originally in positions greater than or equal to position are moved forward one position (Ex If there are 5 songs in a Playlist, positions 1 5, and you remove the SongRecord at position 4, the SongRecord that was at position 5 will be moved to position 4) Throws IllegalArgumentException Indicates that position is not within the valid range Note position refers to the position in the Playlist and not the position inside the array getSong public SongRecord getSong(int position) Get the SongRecord at the given position in this Playlist object Parameters position position of the SongRecord to retrieve Preconditions This Playlist object has been instantiated and 1 position songs currently in playlist Returns The SongRecord at the specified position in this Playlist object Throws IllegalArgumentException Indicates that position is not within the valid range Note position refers to the position in the Playlist and not the position inside the array printAllSongs public void printAllSongs() Prints a neatly formatted table of each SongRecord in the Playlist on its own line with its position number as shown in the sample output Preconditions This SongRecord object has been instantiated Postcondition A neatly formatted table of each SongRecord in the Playlist on its own line with its position number has been displayed to the user Note position refers to the position in the Playlist and not the position inside the array Hint If your toString() method is implemented correctly as described below, you will simply need to call it and print the results to the user getSongsByArtist public static Playlist getSongsByArtist(Playlist originalList, String artist) Generates a new Playlist containing all SongRecords in the original Playlist performed by the specified artist Parameters originalList the original Playlist artist the name of the artist Preconditions The Playlist referred to by originalList has been instantiated Returns A new Playlist object containing all SongRecords in the original Playlist performed by the specified artist Note The return value is null if either originalList or artist is null Note The order of the SongRecords in the new Playlist should relate to the order of the SongRecords in the old Playlist For example, if the original Playlist has 8 SongRecords, positions 1 8, and SongRecords 3, 6, and 8 were performed by the specified artist, the new Playlist should have the SongRecord originally at position 3 placed at location 1, the SongRecord originally at position 6 placed at location 2, and the SongRecord originally at position 8 placed at location 3 toString public String toString() Gets the String representation of this Playlist object, which is a neatly formatted table of each SongRecord in the Playlist on its own line with its position number as shown in the sample output Returns The String representation of this Playlist object Note Position refers to the position in the Playlist and not the position inside the array 3 Write a fully documented class named PlaylistOperations that is based on the following specification public class PlaylistOperations The Playlist Operations Java application tests the methods of the Playlist class and allows the user to manipulate a single Playlist object by performing operations on it main public static void main(String args) The main method runs a menu driven application which first creates an empty Playlist and then prompts the user for a menu command selecting the operation The required information is then requested from the user based on the selected operation Following is the list of menu options and their required information Add Song A Get Song G Remove Song R Print All Songs P Print Songs By Artist B Size S Quit Q 4 You will also need a class to handle the exception FullPlaylistException Note You may include additional methods in the SongRecord, Playlist, or PlaylistOperations as necessary INPUT FORMAT Each menu operation is entered on its own line and should be case insensitive (i e 'q' and 'Q' are the same) Check to make sure that the position, if required, is valid If not, print an error message and return to the menu For the Add Song command, if the input information is valid, construct the object accordingly Otherwise, print an error message and return to the menu You may assume that the lengths of the input for the song titles and artists are less than 25 characters long OUTPUT FORMAT Echo the input information for the Add Song command in the output All menu operations must be accompanied by a message indicating what operation was performed and whether or not it was successful The seconds of the song length must always be printed as two digits (Ex 3 09 is valid but 3 9 is not) All lists must be printed in a nice and tabular form as shown in the sample output You may use C style formatting as shown in the following example The example below shows two different ways of displaying the name and address at pre specified positions 21, 26, 19, and 6 spaces wide If the ' ' flag is given, then it will be left justified (padding will be on the right), else the region is right justified The 's' identifier is for strings, the 'd' identifier is for integers Giving the additional '0' flag pads an integer with additional zeroes in front String name Doe Jane String address 32 Bayview Dr String city Fishers Island, NY int zip 6390 System out println(String format( 21s 26s 19s 06d , name, address, city, zip)) System out printf( 21s 26s 19s 06d , name, address, city, zip) Doe Jane 32 Bayview Dr Fishers Island, NY 06390 Doe Jane 32 Bayview Dr Fishers Island, NY 06390 HINTS Remember that the position parameter to all of the methods listed in the Playlist class refers to the song at a given position within a playlist (starting at position 1) and not the position inside of the array (which starts at position 0) There are two ways that you can handle this issue Store song 1 in array position 0, song 2 in array position 1, and so on and so forth Inside each method, subtract one from the position given by the parameter to find the appropriate position within the array Define your array such that it is of size MAX SONGS 1 instead of MAX SONGS Store song 1 in array position 1, song 2 in array position 2, and so on and so forth Position 0 of the array will not be used EXTRA CREDIT Provide an option to play the song For this option, you should input the song's filename along with other information related to each song (title, artist, duration, etc ) 10 points Use GUI for all the user interface (input output) up to 7 points depending on how well you incorporate the GUI options Add the following menu options to create and manage multiple playlists 15 points N Create a new playlist and set as current playlist Input the playlist name from the user V Change current playlist Input the playlist name from the user C Copy the current playlist's songs into a new playlist Input the new playlist name from the user E Compare the songs in the current playlist with the given playlist Input the given playlist name from the user D Display all playlist names SAMPLE INPUT OUTPUT Note User input is in black, computer generated output appears in blue and comments are in green A) Add Song B) Print Songs by Artist G) Get Song R) Remove Song P) Print All Songs S) Size Q) Quit Select a menu option A Enter the song title Radioactive Enter the song artist Imagine Dragons Enter the song length (minutes) 4 Enter the song length (seconds) 28 Enter the position 1 Song Added Radioactive By Imagine Dragons menu not shown in the sample input output Select a menu option A Enter the song title Push Enter the song artist Matchbox 20 Enter the song length (minutes) 3 Enter the song length (seconds) 59 Enter the position 1 Song Added Push By Matchbox 20 menu not shown in the sample input output Select a menu option P Song Title Artist Length 1 Push Matchbox 20 3 59 2 Radioactive Imagine Dragons 4 28 menu not shown in the sample input output Select a menu option A Enter the song title Gangnam Style Enter the song artist PSY Enter the song length (minutes) 4 Enter the song length (seconds) 9 Enter the position 2 Song Added Gangnam Style By PSY menu not shown in the sample input output Select a menu option P Song Title Artist Length 1 Push Matchbox 20 3 59 2 Gangnam Style PSY 4 09 3 Radioactive Imagine Dragons 4 28 Select a menu option S There are 3 song(s) in the current playlist menu not shown in the sample input output Select a menu option R Enter the position 1 Song Removed at position 1 menu not shown in the sample input output Select a menu option P Song Title Artist Length 1 Gangnam Style PSY 4 09 2 Radioactive Imagine Dragons 4 28 menu not shown in the sample input output Select a menu option A Enter the song title It's Time Enter the song artist Imagine Dragons Enter the song length (minutes) 5 Enter the song length (seconds) 24 Enter the position 3 Song Added It's Time By Imagine Dragons menu not shown in the sample input output Select a menu option P Song Title Artist Length 1 Gangnam Style PSY 4 09 2 Radioactive Imagine Dragons 4 28 3 It's Time Imagine Dragons 5 24 menu not shown in the sample input output Select a menu option B Enter the artist Imagine Dragons Song Title Artist Length 1 Radioactive Imagine Dragons 4 28 2 It's Time Imagine Dragons 5 24 Note the song numbers in comparison with the previous example menu not shown in the sample input output Select a menu option P Song Title Artist Length 1 Gangnam Style PSY 4 09 2 Radioactive Imagine Dragons 4 28 3 It's Time Imagine Dragons 5 24 menu not shown in the sample input output Select a menu option G Enter the position 2 Song Title Artist Length 2 Radioactive Imagine Dragons 4 28 No songs found by artist Select a menu option B Enter the artist Blink 182 Song Title Artist Length Invalid Input examples Select a menu option R Enter the position 4 No song at position 4 to remove menu not shown in the sample input output Select a menu option A Enter the song title Some Other Enter the song artist Song Enter the song length (minutes) 2 Enter the song length (seconds) 14 Enter the position 9 Invalid position for adding the new song menu not shown in the sample input output Select a menu option A Enter the song title Some Other Enter the song artist Song Enter the song length (minutes) 2 Enter the song length (seconds) 214 Enter the position 3 Invalid song length menu not shown in the sample input output Select a menu option Q Program terminating normally

Question

IN JAVA PLEASE 1  Write a fully documented class named SongRecord which contains information about a particular audio file  It should have member variables for the title and artist (both strings) as well as two member variables for the song's length in minutes and seconds (both ints)  You should provide accessor and mutator methods for each variable as well as a default constructor  For the mutator method of the seconds variable, you should throw an exception if the new value is less than 0 or greater than 59  For the mutator method of the minutes variable, you should throw an exception if the new value is negative  Finally, you should provide a toString() method that neatly prints the information about the audio file on a single line as shown below in the sample output  2  Write a fully documented class named Playlist that stores all SongRecord objects that belong to a particular playlist  The SongRecord objects should be stored in an array  There should be a maximum of 50 SongRecord objects allowed, a number which should be defined as a final variable  The class will be based on the following ADT specification  public class Playlist The Playlist class implements an abstract data type for a playlist of audio files supporting common operations on such lists of audio files  Constructor for Playlist public Playlist() Construct an instance of the Playlist class with no SongRecord objects in it  Postcondition  This Playlist has been initialized to an empty list of SongRecords  clone public Object clone() Generate a copy of this Playlist  Returns  The return value is a copy of this Playlist  Subsequent changes to the copy will not affect the original, nor vice versa  Note that the return value must be typecast to a Playlist before it can be used  equals public boolean equals (Object obj) Compare this Playlist to another object for equality  Parameters  obj   an object in which this Playlist is compared Returns  A return value of true indicates that obj refers to a Playlist object with the same SongRecords in the same order as this Playlist  Otherwise, the return value is false  Note  If obj is null or it is not a Playlist object, then the return value is false  Note  When comparing equality between two SongRecord objects, you must verify that their titles, artists, and song lengths are all the same  Using the    operator will simply check to see if the two variables refer to the same SongRecord object, which does not take into consideration that two different SongRecord objects can actually represent the same audio file  To solve this problem, you can either check that each of the properties of the two objects are the same (title, artist, and length) inside of this method, or you may simplify this process by implementing an equals method (similar to this one) for the SongRecord class  size public int size() Determines the number of SongRecords currently in this Playlist  Preconditions  This SongRecord object has been instantiated  Returns  The number of SongRecords in this Playlist  addSong public void addSong(SongRecord song, int position) Parameters  song   the new SongRecord object to add to this Playlist position   the position in the playlist where the song will be inserted Preconditions  This SongRecord object has been instantiated and 1   position   songs currently in playlist   1  The number of SongRecord objects in this Playlist is less than max songs  Postcondition  The new SongRecord is now stored at the desired position in the Playlist  All SongRecords that were originally in positions greater than or equal to position are moved back one position  (Ex  If there are 5 songs in a Playlist, positions 1 5, and you insert a new SongRecord at position 4, the new SongRecord will now be at position 4, the SongRecord that was at position 4 will be moved to position 5, and the SongRecord that was at position 5 will be moved to position 6)  Throws  IllegalArgumentException Indicates that position is not within the valid range  FullPlaylistException Indicates that there is no more room inside of the Playlist to store the new SongRecord object  Note 1  position refers to the position in the Playlist and not the position inside the array  Note 2  Inserting a song to position (songs currently in playlist   1) is effectively the same as adding a song to the end of the Playlist  removeSong public void removeSong(int position) Parameters  position   the position in the playlist where the song will be removed from  Preconditions  This SongRecord object has been instantiated and 1   position   songs currently in playlist  Postcondition  The SongRecord at the desired position in the Playlist has been removed  All SongRecords that were originally in positions greater than or equal to position are moved forward one position  (Ex  If there are 5 songs in a Playlist, positions 1 5, and you remove the SongRecord at position 4, the SongRecord that was at position 5 will be moved to position 4)  Throws  IllegalArgumentException Indicates that position is not within the valid range  Note  position refers to the position in the Playlist and not the position inside the array  getSong public SongRecord getSong(int position) Get the SongRecord at the given position in this Playlist object  Parameters  position   position of the SongRecord to retrieve Preconditions  This Playlist object has been instantiated and 1   position   songs currently in playlist  Returns  The SongRecord at the specified position in this Playlist object  Throws  IllegalArgumentException Indicates that position is not within the valid range  Note  position refers to the position in the Playlist and not the position inside the array  printAllSongs public void printAllSongs() Prints a neatly formatted table of each SongRecord in the Playlist on its own line with its position number as shown in the sample output  Preconditions  This SongRecord object has been instantiated  Postcondition  A neatly formatted table of each SongRecord in the Playlist on its own line with its position number has been displayed to the user  Note  position refers to the position in the Playlist and not the position inside the array  Hint  If your toString() method is implemented correctly as described below, you will simply need to call it and print the results to the user  getSongsByArtist public static Playlist getSongsByArtist(Playlist originalList, String artist) Generates a new Playlist containing all SongRecords in the original Playlist performed by the specified artist  Parameters  originalList   the original Playlist artist   the name of the artist Preconditions  The Playlist referred to by originalList has been instantiated  Returns  A new Playlist object containing all SongRecords in the original Playlist performed by the specified artist  Note  The return value is null if either originalList or artist is null  Note  The order of the SongRecords in the new Playlist should relate to the order of the SongRecords in the old Playlist  For example, if the original Playlist has 8 SongRecords, positions 1 8, and SongRecords 3, 6, and 8 were performed by the specified artist, the new Playlist should have the SongRecord originally at position 3 placed at location 1, the SongRecord originally at position 6 placed at location 2, and the SongRecord originally at position 8 placed at location 3  toString public String toString() Gets the String representation of this Playlist object, which is a neatly formatted table of each SongRecord in the Playlist on its own line with its position number as shown in the sample output  Returns  The String representation of this Playlist object  Note  Position refers to the position in the Playlist and not the position inside the array  3  Write a fully documented class named PlaylistOperations that is based on the following specification  public class PlaylistOperations The Playlist Operations Java application tests the methods of the Playlist class and allows the user to manipulate a single Playlist object by performing operations on it  main public static void main(String   args) The main method runs a menu driven application which first creates an empty Playlist and then prompts the user for a menu command selecting the operation  The required information is then requested from the user based on the selected operation  Following is the list of menu options and their required information  Add Song  A Get Song  G Remove Song  R Print All Songs  P Print Songs By Artist  B Size  S Quit  Q 4  You will also need a class to handle the exception FullPlaylistException  Note  You may include additional methods in the SongRecord, Playlist, or PlaylistOperations as necessary  INPUT FORMAT  Each menu operation is entered on its own line and should be case insensitive (i e  'q' and 'Q' are the same)  Check to make sure that the position, if required, is valid  If not, print an error message and return to the menu  For the Add Song command, if the input information is valid, construct the object accordingly  Otherwise, print an error message and return to the menu  You may assume that the lengths of the input for the song titles and artists are less than 25 characters long  OUTPUT FORMAT  Echo the input information for the Add Song command in the output  All menu operations must be accompanied by a message indicating what operation was performed and whether or not it was successful  The seconds of the song length must always be printed as two digits (Ex  3 09 is valid but 3 9 is not)  All lists must be printed in a nice and tabular form as shown in the sample output  You may use C style formatting as shown in the following example  The example below shows two different ways of displaying the name and address at pre specified positions 21, 26, 19, and 6 spaces wide  If the ' ' flag is given, then it will be left justified (padding will be on the right), else the region is right justified  The 's' identifier is for strings, the 'd' identifier is for integers  Giving the additional '0' flag pads an integer with additional zeroes in front  String name    Doe Jane   String address    32 Bayview Dr    String city    Fishers Island, NY   int zip   6390  System out println(String format(   21s  26s 19s 06d , name, address, city, zip))  System out printf(   21s  26s 19s 06d , name, address, city, zip)  Doe Jane 32 Bayview Dr  Fishers Island, NY 06390 Doe Jane 32 Bayview Dr  Fishers Island, NY 06390 HINTS  Remember that the position parameter to all of the methods listed in the Playlist class refers to the song at a given position within a playlist (starting at position 1) and not the position inside of the array (which starts at position 0)  There are two ways that you can handle this issue  Store song 1 in array position 0, song 2 in array position 1, and so on and so forth  Inside each method, subtract one from the position given by the parameter to find the appropriate position within the array  Define your array such that it is of size MAX SONGS   1 instead of MAX SONGS  Store song 1 in array position 1, song 2 in array position 2, and so on and so forth  Position 0 of the array will not be used  EXTRA CREDIT  Provide an option to play the song  For this option, you should input the song's filename along with other information related to each song (title, artist, duration, etc )   10 points  Use GUI for all the user interface (input output)   up to 7 points depending on how well you incorporate the GUI options  Add the following menu options to create and manage multiple playlists   15 points  N   Create a new playlist and set as current playlist  Input the playlist name from the user  V   Change current playlist  Input the playlist name from the user  C   Copy the current playlist's songs into a new playlist  Input the new playlist name from the user  E   Compare the songs in the current playlist with the given playlist  Input the given playlist name from the user  D   Display all playlist names  SAMPLE INPUT OUTPUT  Note  User input is in black, computer generated output appears in blue and comments are in green  A) Add Song B) Print Songs by Artist G) Get Song R) Remove Song P) Print All Songs S) Size Q) Quit Select a menu option  A Enter the song title  Radioactive Enter the song artist  Imagine Dragons Enter the song length (minutes)  4 Enter the song length (seconds)  28 Enter the position  1 Song Added  Radioactive By Imagine Dragons    menu not shown in the sample input output Select a menu option  A Enter the song title  Push Enter the song artist  Matchbox 20 Enter the song length (minutes)  3 Enter the song length (seconds)  59 Enter the position  1 Song Added  Push By Matchbox 20    menu not shown in the sample input output Select a menu option  P Song  Title Artist Length                                                  1 Push Matchbox 20 3 59 2 Radioactive Imagine Dragons 4 28    menu not shown in the sample input output Select a menu option  A Enter the song title  Gangnam Style Enter the song artist  PSY Enter the song length (minutes)  4 Enter the song length (seconds)  9 Enter the position  2 Song Added  Gangnam Style By PSY    menu not shown in the sample input output Select a menu option  P Song  Title Artist Length                                                  1 Push Matchbox 20 3 59 2 Gangnam Style PSY 4 09 3 Radioactive Imagine Dragons 4 28 Select a menu option  S There are 3 song(s) in the current playlist     menu not shown in the sample input output Select a menu option  R Enter the position  1 Song Removed at position 1    menu not shown in the sample input output Select a menu option  P Song  Title Artist Length                                                  1 Gangnam Style PSY 4 09 2 Radioactive Imagine Dragons 4 28    menu not shown in the sample input output Select a menu option  A Enter the song title  It's Time Enter the song artist  Imagine Dragons Enter the song length (minutes)  5 Enter the song length (seconds)  24 Enter the position  3 Song Added  It's Time By Imagine Dragons    menu not shown in the sample input output Select a menu option  P Song  Title Artist Length                                                  1 Gangnam Style PSY 4 09 2 Radioactive Imagine Dragons 4 28 3 It's Time Imagine Dragons 5 24    menu not shown in the sample input output Select a menu option  B Enter the artist  Imagine Dragons Song  Title Artist Length                                                  1 Radioactive Imagine Dragons 4 28 2 It's Time Imagine Dragons 5 24   Note the song numbers in comparison with the previous example     menu not shown in the sample input output Select a menu option  P Song  Title Artist Length                                                  1 Gangnam Style PSY 4 09 2 Radioactive Imagine Dragons 4 28 3 It's Time Imagine Dragons 5 24    menu not shown in the sample input output Select a menu option  G Enter the position  2 Song  Title Artist Length                                                  2 Radioactive Imagine Dragons 4 28   No songs found by artist  Select a menu option  B Enter the artist  Blink 182 Song  Title Artist Length                                                    Invalid Input examples  Select a menu option  R Enter the position  4 No song at position 4 to remove     menu not shown in the sample input output Select a menu option  A Enter the song title  Some Other Enter the song artist  Song Enter the song length (minutes)  2 Enter the song length (seconds)  14 Enter the position  9 Invalid position for adding the new song     menu not shown in the sample input output Select a menu option  A Enter the song title  Some Other Enter the song artist  Song Enter the song length (minutes)  2 Enter the song length (seconds)  214 Enter the position  3 Invalid song length     menu not shown in the sample input output Select a menu option  Q Program terminating normally

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Question: IN JAVA PLEASE 1. Write a fully-documented class named SongRecord which contains information about a particular audio file. It should have member variables for the