Print album sorted by date method

1 files changed, 28 insertions, 4 deletions

diff --git a/jMusicHub.java b/jMusicHub.java
index f25fb46..cd3d3eb 100644
--- a/jMusicHub.java
+++ b/jMusicHub.java
@@ -2,7 +2,6 @@ import java.util.*;
 import java.io.*;
 import java.text.*;
 /* TO DO :
- * Printing the songs of a chosen album
  * Printing album sorted by date of release
  * Printing album sorted by its songs genre
  * Printing audiobooks sorted by author
@@ -343,6 +342,28 @@ public class jMusicHub {
 		catch (ClassNotFoundException ex) {System.out.println("ClassNotFoundException is caught");}
 	}
 
+	public static void listAlbumsByDate(){
+		String filename = "albums";
+		try {
+			// Reading the object from a file
+			FileInputStream file = new FileInputStream(filename);
+			ObjectInputStream in = new ObjectInputStream(file);
+
+			@SuppressWarnings("unchecked")
+			ArrayList<Album> albums = (ArrayList<Album>)in.readObject();
+			in.close();
+			file.close();
+
+			Collections.sort(albums, Comparator.comparing(Album::getDate));
+
+			System.out.println("\nSaved "+filename+", sorted by name :\n");
+			for (Album a : albums ){
+				System.out.println(a);
+			}
+		}
+		catch (IOException ex) {System.out.println(filename+ " file missing.");}
+		catch (ClassNotFoundException ex) {System.out.println("ClassNotFoundException is caught");}
+	}
 
 /**<h2>extract</h2>
  * Extract is used to print the content of the files and put them in the ArrayList used to add elements.
@@ -536,7 +557,7 @@ public class jMusicHub {
 			switch(userInput) {
 
 				case "h" : //page help
-					System.out.printf("c: add a new song\na: add a new album\n+: add an existing song to an album\nl: add a new audiobook\n\np: create a new playlist from existing songs and audiobooks\n-: delete a playlist\n\ns: save playlists, albums, songs and audiobooks into the concerned files\n\nS: List all your saved songs\nB: List all your saved audiobooks\nA: List all your saved albums\nP: List all your saved playlists\n\nPS: Print playlists sorted by their name\nPC: Print the content of a playlist\nAC: Print the content of an album\n\nh: print this help screen\nq: quit the program\n");
+					System.out.printf("c: add a new song\na: add a new album\n+: add an existing song to an album\nl: add a new audiobook\n\np: create a new playlist from existing songs and audiobooks\n-: delete a playlist\n\ns: save playlists, albums, songs and audiobooks into the concerned files\n\nS: List all your saved songs\nB: List all your saved audiobooks\nA: List all your saved albums\nP: List all your saved playlists\n\nPS: Print playlists sorted by their name\nPC: Print the content of a playlist\nAD: Print albums sorted by their date of release\nAC: Print the content of an album\n\nh: print this help screen\nq: quit the program\n");
 					break;
 
 				case "q" : //quit
@@ -663,10 +684,13 @@ public class jMusicHub {
 				case "PS": //print playlists sorted by their name
 					listPlaylistsByName();
 					break;
-				case "PC":
+				case "PC": //display content of a chosen playlist
 					contentOfPlaylist(playlists);
 					break;
-				case "AC":
+				case "AD" :
+					listAlbumsByDate();
+					break;
+				case "AC": //display content of a chosen album
 					contentOfAlbum(albums);
 					break;
 				default :