code cleanup

src/main/java/ch/zhaw/pm2/racetrack/strategy/MoveListStrategy.java

@@ -46,8 +46,8 @@ public class MoveListStrategy implements MoveStrategy {
                     break;
                 }
             }
-            if (!(validLine || line == "")) {
-                throw new InvalidFileFormatException("The File contains invalid data! Please ");
+            if (!(validLine || line.equals(""))) {
+                throw new InvalidFileFormatException("The File contains invalid data!");
             }
         }
     }