Recall from the previous chapter that you can build your
own editors and renderers for the cells in your table. One easy
customization is altering the properties of the
DefaultTableCellRenderer, which is an
JLabel. You can use
icons, colors, text alignment, borders, and anything that can change the
look of a label.
You don’t have to rely on
JLabel, though. Developers come across all
types of data. Some of that data is best represented as text—some isn’t.
For data that requires (or at least enjoys the support of) alternate
representations, your renderer can extend any component. To be more
precise, it can extend
your options are boundless. We look at one of those options next.
Figure 16-3 shows a table containing audio tracks in a mixer format, using the default renderer. We have some track information, such as the track name, its start and stop times, and two volumes (left and right channels, both using integer values from to 100) to control.
Figure 16-3. A standard table with cells drawn by the DefaultTableCellRenderer
We’d really like to show our volume entries as sliders. The sliders give us a better indication of the relative volumes. Figure 16-4 shows the application with a custom renderer for the volumes.
Figure 16-4. A standard table with the volume cells drawn by VolumeRenderer
The code for ...