public static String GetJsonToString(Statement statement,String UID)
	{
		List<CarNumber> carNumberList = new ArrayList();
		String resultString = null;
		String sql;
		String result = null;
		sql = "select * from carnumber where UID = '" + UID +"'";
		try 
		{
			ResultSet rs = statement.executeQuery(sql);
			while (rs.next()) {
				CarNumber cn = new CarNumber();
				cn.setUid(rs.getString("UID"));
				cn.setCarNumber(rs.getString("carnumber"));
				cn.setPhoneNumber("phonenumber");
				carNumberList.add(cn);
			}
			
			JSONArray jsonArray = JSONArray.fromObject(carNumberList);
			resultString = jsonArray.toString();
		} 
		catch (SQLException e) 
		{
			System.out.println("Error! (from src/Operation/ParkListFromDistrict");
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		return resultString;
	}