Added method in Print with parameter List<List<String>> and prints it
Edited methods to acquire ArrayList data from DBRetrieve class. removed unused method and  variables.
Deleted method getData(Connection c, String q), added static method getQuery(String propertyKey) that gets query statements for the database from query.properties
Fixed line with connection.close() to check first that the connection is not null
Changed parameter of method execute. Cleaned codes.
Query statements now get it from DBRetrieve.getQuery() method. cleaned code.
Added query.properties`