refactoring:

src/main/java/BattleShip/BShip.java

@@ -169,7 +169,7 @@ public class BShip {
     public class ShipsPlacedReader implements Runnable {
 
         public void run() {
-            while (grid1 == null && grid2 == null) {
+            while (grid1 != null && grid2 != null) {
                 while (!shipsPlaced) {
                     synchronized (lock) {
                        try {