If you want a radio button to be showing on the JTable as a cell, you need to provide it through a TableCellRenderer. TableCellRenderers are provided either by TableColumn or cell value Class. Thus, I would access the desired TableColumn (through the TableColumnModel) and set its TableCellRenderer. In addition to this, if you want this radio button to be editable, you should provide a TableCellEditor as well. Moreover, if only one radio button can be selected in the whole column, make sure the whole column is repainted when selection changes. But why do you need the radio button? To select the flight to book seats for? That can be accomplished by allowing single selection of the table rows. It is much easier than having radio buttons.