How can I make a JTable wider than the cumulation of its columns??

Question

I have a JTable that overrides tableChanged to modify its size based on how many rows and columns it has and adding 16 pixels. Everything works great with adding 16 pixels to the bottom of my table, but when I try to add 16 pixels to the right side, the columns grow to fill the space even though I have AUTO_RESIZE_OFF.
I want there to be 16 pixels between the edge of my last column and the edge of the scroll pane when I have scrolled all the way to the right.
Does anybody know how to do this?? I have been messing with it for hours!
Tonya
P.S. Here is the code so far:
     class AlgoResultsSpreadsheetTable extends JTable {
          AlgoResultsSpreadsheetTable() {
               super();
               setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
               setOpaque(false);
          public void tableChanged(TableModelEvent e) {
               super.tableChanged(e);
               setMinimumSize(new Dimension((getColumnCount() * 75) + 16,
                         (getRowCount() + 1) * 16));
               setPreferredSize(new Dimension((getColumnCount() * 75) + 16,
                         (getRowCount() + 1) * 16));
               JTableHeader header = getTableHeader();
               header.setPreferredSize(
                         new Dimension((getColumnCount() * 75) + 16, 200));
     }

Answer 1

Nevermind... I just figured it out:
               Enumeration<TableColumn> enu = getColumnModel().getColumns();
               while (enu.hasMoreElements()) {
                    TableColumn column = enu.nextElement();
                    column.setPreferredWidth(75);
                    column.setMaxWidth(75);
                    column.setResizable(false);
               }