Editing and Rendering
You can build your own editors and
renderers for the cells in your table. By default, you get renderers
and editors for
JCheckBox for display and editing),
JTextField for an editor), and
Object types (
editing). However, you can specify a particular editor or renderer
for a class type or a particular column, or even a particular cell.
The TableCellRenderer Interface
This interface provides access to a rendering component without defining what the component will do. This works because a renderer functions by rubber-stamping a component’s image in a given location. The only method this interface defines initializes and returns just such a component:
- public abstract Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column)
value, which could also be retrieved by getting the cell at
table, and returns a component capable of drawing the value in a table cell (or anywhere, really). The resulting drawing can be affected by the selection state of the object and whether or not it currently has the keyboard focus.
The DefaultTableCellRenderer Class
package includes a default renderer that produces a
JLabel to display text for each cell in the table.
JTable class uses this renderer to display
JTable creates a new default renderer and then aligns ...