changes in the Interface.

src/main/java/device/Device.java

@@ -8,12 +8,8 @@ public interface Device {
 	void next();
 	void prev();
 	String getInfoText();
-	//returns an array with Method-Names  to bee listed
 	String[] getOptions();
-	//returns an array with contents to bee played
-	String[] getItemList();
-
+	String chooseOption();
 	String play();
 
-
 	}

src/main/java/device/cdPlayer/CDPlayer.java

@@ -69,15 +69,14 @@ public class CDPlayer implements Device {
 
     @Override
     public String[] getOptions() {
-        return new String[0];
+        return loadedCD.getPlayList();
     }
 
     @Override
-    public String[] getItemList() {
-        return loadedCD.getPlayList();
+    public String chooseOption() {
+        return null;
     }
 
-
     @Override
     public String play() {
         if(isCdFlapOpen()){

src/main/java/device/radioPlayer/RadioPlayer.java

@@ -157,11 +157,10 @@ public class RadioPlayer implements Device {
     }
 
     @Override
-    public String[] getItemList() {
-        return new String[0];
+    public String chooseOption() {
+        return null;
     }
 
-
     @Override
     public String play() {
         if (regionPlaylist.contains(playedStation))

src/main/java/device/usbPlayer/UsbPlayer.java

@@ -151,11 +151,10 @@ public class UsbPlayer implements Device {
     }
 
     @Override
-    public String[] getItemList() {
-        return new String[0];
+    public String chooseOption() {
+        return null;
     }
 
-
     @Override
     public String play() {
         String result = "USB : ";

src/test/java/device/cdPlayer/CDPlayerTest.java

@@ -193,7 +193,7 @@ class CDPlayerTest {
         return Stream.of(
                 Arguments.of("[getActualPlayTrack() after 1x next() starting by firstSong] => SecondSongSelected","SecondSongSelected", cdPlayer1, 1, cdPlayer1.getSongByNumber(1)),
                 Arguments.of("[getActualPlayTrack() after 2x next() starting by firstSong] => ThirdSongSelected","ThirdSongSelected" ,cdPlayer2,2,cdPlayer2.getSongByNumber(2)),
-                Arguments.of("[getActualPlayTrack() after 1x next() starting by lastSong] => FirstSongSelected","FirstSongSelected", cdPlayer3,cdPlayer3.getItemList().length,cdPlayer3.getSongByNumber(0))
+                Arguments.of("[getActualPlayTrack() after 1x next() starting by lastSong] => FirstSongSelected","FirstSongSelected", cdPlayer3,cdPlayer3.getOptions().length,cdPlayer3.getSongByNumber(0))
         );
     }