Cleaned up code

src/main/java/de/gnmyt/SQLToolkit/manager/DeletionManager.java

@@ -14,7 +14,7 @@ public class DeletionManager {
     private final MySQLConnection connection;
     private final HashMap<String, Object> whereList;
     private final ArrayList<Object> databaseParameters;
-    private ArrayList<String> optionalQuery;
+    private final ArrayList<String> optionalQuery;
     private String tableName;
 
     /**

src/main/java/de/gnmyt/SQLToolkit/manager/SelectionManager.java

@@ -15,7 +15,7 @@ public class SelectionManager {
     private final MySQLConnection connection;
     private final HashMap<String, Object> whereList;
     private final ArrayList<Object> databaseParameters;
-    private ArrayList<String> optionalQuery;
+    private final ArrayList<String> optionalQuery;
     private int limit;
     private String tableName;