update

src/main/java/BattleShip/GridGUI.java

@@ -97,7 +97,13 @@ public class GridGUI extends JPanel {
                     }
                 }
             }
+            for(int i = 0; i < shipLength; i++) {
+                buttons.get(testLocations[i]).setCellContents(s);
+            }
+
+            testLocations = null;
         }
+
     }
     public boolean getClicked() {return clicked;}
     public void setClicked() {