java doc GameUI handleTurn switch and Board turnEnd adjusted

Board.java

@@ -67,9 +67,13 @@ public class Board extends Thread {
     
     /**
      * Ends the turn by increasing the mark counter and changing the player.
-     * Additionally it ends the game when certain conditions are met.
+     * Defines an end state and returns it.
+     * end states:
+     * 0 = no draw, no winner
+     * 1 = current player won
+     * 2 = draw
      * 
-     * @return current player won
+     * @return end state of the turn.
      */
     public int turnEnd() {
         marks++;

GameUI.java

@@ -168,7 +168,9 @@ public class GameUI extends Application{
                 winnerLabel.setText("It's a draw!");
                 stage.setScene(winningScene);
                 break;
+
             default:
+                //should never be reached
                 System.out.println("How did we get here?");
                 break;
         }