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May I ask what you are trying to achieve? I somehow got the feeling that you are doing something that's usually not done with tables.
Anyway, what you should do is to familiarize yourself with Vaadin's datamodel. If you think of Vaadin containers in database terms, then a container would correspond to a table. A container contains a collection of items (corresponds rows) and each item has a set of properties (corresponds columns or fields in the row). What you should do is to populate your container in the way you want and then attach the container to the table.
Well im creating the virtual task board for a scrum management tool so in the entity task in the database it has a status which maps to the column of the table in the board. So i want to see the column name first then insert in the cell in the table.