task 2

src/ch/hevs/isc/slopify_v2/Album.scala

@@ -2,8 +2,11 @@ package ch.hevs.isc.slopify_v2
 
 import scala.collection.mutable.ArrayBuffer
 
-class Album(val name: String) {
-  private var songs: ArrayBuffer[Song] = new ArrayBuffer()
-  def addSong(song: Song): Unit = songs.addOne(song)
-  def containsSong(song: Song): Boolean = songs.contains(song)
+class Album(val name: String) extends Serializable {
+  private var _songs: ArrayBuffer[Song] = new ArrayBuffer()
+  def addSong(song: Song): Unit = _songs.addOne(song)
+  def containsSong(song: Song): Boolean = _songs.contains(song)
+  def getSongs(): Array[Song] = _songs.toArray
+
+  override def toString: String = s"<Album '$name': ${_songs.length} song(s)>"
 }