Java JTable setting Column Width

Hamza Yerlikaya picture Hamza Yerlikaya · Jun 5, 2009 · Viewed 263.7k times · Source

I have a JTable in which I set the column size as follows:

table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
table.getColumnModel().getColumn(0).setPreferredWidth(27);
table.getColumnModel().getColumn(1).setPreferredWidth(120);
table.getColumnModel().getColumn(2).setPreferredWidth(100);
table.getColumnModel().getColumn(3).setPreferredWidth(90);
table.getColumnModel().getColumn(4).setPreferredWidth(90);
table.getColumnModel().getColumn(6).setPreferredWidth(120);
table.getColumnModel().getColumn(7).setPreferredWidth(100);
table.getColumnModel().getColumn(8).setPreferredWidth(95);
table.getColumnModel().getColumn(9).setPreferredWidth(40);
table.getColumnModel().getColumn(10).setPreferredWidth(400);

This works fine, but when the table is maximized, I get empty space to the right of the last column. Is it possible to make the last column resize to the end of the window when resized?

I found AUTO_RESIZE_LAST_COLUMN property in docs but it does not work.

Edit: JTable is in a JScrollPane its prefered size is set.

Answer

Eddie picture Eddie · Jun 5, 2009

What happens if you call setMinWidth(400) on the last column instead of setPreferredWidth(400)?

In the JavaDoc for JTable, read the docs for doLayout() very carefully. Here are some choice bits:

When the method is called as a result of the resizing of an enclosing window, the resizingColumn is null. This means that resizing has taken place "outside" the JTable and the change - or "delta" - should be distributed to all of the columns regardless of this JTable's automatic resize mode.

This might be why AUTO_RESIZE_LAST_COLUMN didn't help you.

Note: When a JTable makes adjustments to the widths of the columns it respects their minimum and maximum values absolutely.

This says that you might want to set Min == Max for all but the last columns, then set Min = Preferred on the last column and either not set Max or set a very large value for Max.