In this chapter, we’re going to take a different approach.
Tables are extremely flexible, useful gadgets. Here, we’re
going to show you how to put tables to work in more advanced
situations. Most of these require working on the
TableModel itself or the
TableColumnModel. But once you know what
you’re doing, subclassing these models is fairly easy and gives
you a lot of flexibility.
We’re going to look at three particular examples:
A scrollable table with row headers. Remember that a
JTable understands column headers, but
doesn’t have any concept of a row header. Also, remember that a
JScrollPane understands both column and row
headers. In this example, we’ll show you how to add row headers
JTable and make them work properly within a
A table that has an extremely large numbers of rows. Scrolling stops working well when you have more than a few hundred rows to work with. We’ll build a table with 10,000 rows, let you page up and down to select a range of 100 rows within the table, and then scroll back and forth within that more limited range.
TableChart component that builds pie charts
based on the
TableModel class used by
JTable. In this example, the
JTable is almost superfluous, although it provides
a convenient way to edit the data in the pie chart. The real point is
TableModel is a powerful abstraction that
can be put to use even when there’s no table around.
As we promised, this is a table ...