diff options
| -rw-r--r-- | Song.java | 4 | ||||
| -rw-r--r-- | jMusicHub.java | 206 |
2 files changed, 81 insertions, 129 deletions
@@ -1,3 +1,7 @@ +/**<h1>Song<h1> + * Song is using instanciating MusicalElement and is Serializable. + * */ + public class Song extends MusicalElement{ private static final long serialVersionUID = 2112880640160601826L; diff --git a/jMusicHub.java b/jMusicHub.java index 799c715..56cf38c 100644 --- a/jMusicHub.java +++ b/jMusicHub.java @@ -54,7 +54,7 @@ public class jMusicHub { } /** <h2>addAudioBook</h2> - * add Song is used to add songs thanks to the "c" option + * add Song is used to add songs thanks to the "l" option * @param scan Scanner Object */ public static AudioBook addAudioBook(Scanner scan){ @@ -98,13 +98,13 @@ public class jMusicHub { } } -/**<h2>saveSongs</h2> - * saveSongs is used by the command "s" - * @param songs ArrayList<Song> Object +/**<h2>save</h2> + * save is used by the command "s" + * @param filename String + * @param elements ArrayList * */ - public static void saveSongs(ArrayList<Song> songs){ - - String filename = "songs"; + @SuppressWarnings ("rawtypes") + public static void save(String filename, ArrayList elements){ // Serialization try { @@ -114,52 +114,24 @@ public class jMusicHub { ObjectOutputStream out = new ObjectOutputStream(file); // Method for serialization of object - out.writeObject(songs); + out.writeObject(elements); out.close(); file.close(); - System.out.println("Your songs have been saved.\n"); + System.out.println("Your " + filename + " have been saved."); } catch (IOException ex) { System.out.println("IOException is caught"); } } -/**<h2>saveAudioBooks</h2> - * saveAudioBooks is used by the command "l" - * @param audiobooks ArrayList<AudioBook> Object +/**<h2>list</h2> + * list is called when using the "AB" and "S" commands in order to list the elements in respective files. + * @param filename String * */ - public static void saveAudioBooks(ArrayList<AudioBook> audiobooks){ - - String filename = "audiobooks"; - - // Serialization - try { - - // Saving of object in a file - FileOutputStream file = new FileOutputStream(filename); - ObjectOutputStream out = new ObjectOutputStream(file); - - // Method for serialization of object - out.writeObject(audiobooks); - out.close(); - file.close(); - - System.out.println("Your audiobooks have been saved.\n"); - } - catch (IOException ex) { - System.out.println("IOException is caught"); - } - } - -/**<h2>listSongs</h2> - * listSongs is called when using the "S" command in order to list the songs inside the "songs" file. - * */ - - public static void listSongs(){ - String filename="songs"; + public static void list(String filename){ // Deserialization try { @@ -167,111 +139,82 @@ public class jMusicHub { FileInputStream file = new FileInputStream(filename); ObjectInputStream in = new ObjectInputStream(file); - @SuppressWarnings("unchecked") // Method for deserialization of object - ArrayList<Song> songsInFile = (ArrayList<Song>)in.readObject(); + switch(filename) { + case "songs": + @SuppressWarnings("unchecked") + ArrayList<Song> songs = (ArrayList<Song>)in.readObject(); + in.close(); + file.close(); - in.close(); - file.close(); - System.out.println("\nSaved songs :\n"); - for (Song s : songsInFile ){ - System.out.println(s); - } - } - catch (IOException ex) {System.out.println("listSongs : Audio file missing.");} - catch (ClassNotFoundException ex) {System.out.println("ClassNotFoundException is caught");} - } + System.out.println("\nSaved "+filename+" :\n"); -/**<h2>listAudioBooks</h2> - * listAudioBooks is called when using the "AB" command in order to list the songs inside the "audiobooks" file. - * */ + for (Song s : songs ){ + System.out.println(s); + } + break; + case "audiobooks" : + @SuppressWarnings("unchecked") + ArrayList<AudioBook> audiobooks = (ArrayList<AudioBook>)in.readObject(); + in.close(); + file.close(); - public static void listAudioBooks(){ - String filename="audiobooks"; + System.out.println("\nSaved "+filename+" :\n"); - // Deserialization - try { - // Reading the object from a file - FileInputStream file = new FileInputStream(filename); - ObjectInputStream in = new ObjectInputStream(file); + for (AudioBook ab : audiobooks ){ + System.out.println(ab); + } + + break; + } - @SuppressWarnings("unchecked") - // Method for deserialization of object - ArrayList<AudioBook> audiobooks = (ArrayList<AudioBook>)in.readObject(); - in.close(); - file.close(); - System.out.println("\nSaved audiobooks :\n"); - for (AudioBook s : audiobooks ){ - System.out.println(s); - } } - catch (IOException ex) {System.out.println("listAudioBooks : AudioBook file missing.");} + catch (IOException ex) {System.out.println(filename+ " file missing.");} catch (ClassNotFoundException ex) {System.out.println("ClassNotFoundException is caught");} } -/**<h2>extractSongs</h2> - * Extraction is used to print the content of the files and put them in the ArrayList used to add elements. +/**<h2>extract</h2> + * Extract is used to print the content of the files and put them in the ArrayList used to add elements. + * @param String filename * */ - - public static ArrayList<Song> extractSongs(){ + @SuppressWarnings("rawtypes") + public static ArrayList extract(String filename){ // Deserialization try { + FileInputStream file = new FileInputStream(filename); + ObjectInputStream in = new ObjectInputStream(file); - String songFileName="songs"; - FileInputStream songFile = new FileInputStream(songFileName); - ObjectInputStream inSong = new ObjectInputStream(songFile); - - @SuppressWarnings("unchecked") - ArrayList<Song> songs = (ArrayList<Song>)inSong.readObject(); - //used to temporarly save the songs before any "s" command + switch (filename) { + case "songs" : + @SuppressWarnings("unchecked") + ArrayList<Song> songs = (ArrayList<Song>)in.readObject(); - inSong.close(); - songFile.close(); + in.close(); + file.close(); - return new ArrayList<Song>(songs); - //Here will be the number of playlist, albums, songs and audiobook extracted + return new ArrayList<Song>(songs); + case "audiobooks" : + @SuppressWarnings("unchecked") + ArrayList<AudioBook> audiobooks = (ArrayList<AudioBook>)in.readObject(); + in.close(); + file.close(); + return new ArrayList<AudioBook>(audiobooks); + default : + return new ArrayList(); + } } catch (IOException ex) { //mainly occur bc file is missing, leading to an empty ListArray - System.out.println("\nextractSongs : Songs file missing.\n"); - return new ArrayList<Song>() ;} - catch (ClassNotFoundException ex) {System.out.println("ClassNotFoundException is caught");return null;} -} - -/**<h2>extractAudioBooks</h2> - * Extraction is used to print the content of the files and put them in the ArrayList used to add elements. - * */ - - public static ArrayList<AudioBook> extractAudioBooks(){ - - // Deserialization - try { - - String audiobookFileName="audiobooks"; - FileInputStream audiobookFile = new FileInputStream(audiobookFileName); - ObjectInputStream inAudioBook = new ObjectInputStream(audiobookFile); - - @SuppressWarnings("unchecked") - ArrayList<AudioBook> audiobooks = (ArrayList<AudioBook>)inAudioBook.readObject(); - - inAudioBook.close(); - audiobookFile.close(); - - return new ArrayList<AudioBook>(audiobooks); - //Here will be the number of playlist, albums, songs and audiobook extracted - - + System.out.println("\n"+filename+" file missing.\n"); + return new ArrayList() ;} + catch (ClassNotFoundException ex) {System.out.println("ClassNotFoundException is caught");return null; } - catch (IOException ex) { //mainly occur bc file is missing, leading to an empty ListArray - System.out.println("\nextractAudioBooks : AudioBooks file missing.\n"); - return new ArrayList<AudioBook>() ;} - catch (ClassNotFoundException ex) {System.out.println("ClassNotFoundException is caught");return null;} -} + } public jMusicHub() { @@ -280,10 +223,15 @@ public class jMusicHub { Scanner scan = new Scanner(System.in); String userInput; //Used to get the user's inputs. - ArrayList<Song> songs = extractSongs(); - ArrayList<AudioBook> audiobooks = extractAudioBooks(); - listSongs(); - listAudioBooks(); + System.out.println("Extraction beginning..."); + @SuppressWarnings("unchecked") + ArrayList<Song> songs = extract("songs"); + @SuppressWarnings("unchecked") + ArrayList<AudioBook> audiobooks = extract("audiobooks"); + + list("songs"); + list("audiobooks"); + System.out.println("\nExtraction done."); do { System.out.println("What do you want to do? [h for help]"); @@ -344,14 +292,14 @@ public class jMusicHub { case "-": break; case "s": //save songs, audiobooks, playlist and albums - saveSongs(songs); - saveAudioBooks(audiobooks); + save("songs", songs); + save("audiobooks", audiobooks); break; case "S": //print songs contained in songs - listSongs(); + list("songs"); break; case "AB": //print audiobooks containd in audiobooks - listAudioBooks(); + list("audiobooks"); break; default : System.out.println("Unknown command. Type h for help."); |