How to create CellTable based on the response from the server

1. I want to create a CellTable. But Columns of the celltable should be based on the response from the server. I'm getting the server response as List.

   No of Columns = Size of the list. 
   

2. CellTable column header should be the value from the server. For ex. Server response: List<Contacts> contacts

   Header should be contacts.getName().

I achieved it by the following code.

          for (Contacts contact : contacts) {
               final String city = contact.getCity();
               final TextColumn<String> addressColumn = new TextColumn<String>() {

                @Override
                public String getValue(Contacts object) {
                    return city;
                }
            };

            cellTable.addColumn(addressColumn, contact.getAddress());
            }

Regards, Gnik