public QueryExecuter() {
		File file = new File(System.getProperty("user.dir")+File.separator+"connectionString.txt");
		Scanner scan = null;
		try {
			scan = new Scanner(file);
			while (scan.hasNextLine()) {
				connectionString = scan.nextLine();
				break;
			}
			connection = DriverManager.getConnection(connectionString);
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (SQLException e) {
			e.printStackTrace();
		}finally{
			if(scan!=null){
				scan.close();
			}
		}
		
		if (getConnection() != null) {
			logs("connection OK");
		}
	}