JTable - Uma coluna em negrito

suaTable.getColumn(numeroDaColuna).setCellRenderer(new TableCellRenderer()
        {
            public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column)
            {
                JLabel renderer = new JLabel();
                renderer.setFont(renderer.getFont().deriveFont(Font.BOLD));
                return renderer;                
            }            
        });