Use local variable

Design Patterns/src/adapter/media/player/AudioPlayer.java

@@ -2,15 +2,13 @@ package adapter.media.player;
 
 public class AudioPlayer implements MediaPlayer {
 
-    private MediaAdapter mediaAdapter;
-
     @Override
     public void play(String audioType, String fileName) {
 
         if (audioType.equalsIgnoreCase("mp3")) {
             System.out.println("Playing MP3 File | Name: " + fileName);
         } else if (audioType.equalsIgnoreCase("mp4") || audioType.equalsIgnoreCase("vlc")) {
-            mediaAdapter = new MediaAdapter(audioType);
+            MediaAdapter mediaAdapter = new MediaAdapter(audioType);
             mediaAdapter.play(audioType, fileName);
         } else {
             System.out.printf("Media Format '%s' Not Recognised!", audioType);