Tables - The Definitive Guide to Java Swing - page 673

the JList component information in Chapter 13. They're used to describe the current set of
rows and columns within the JTable component. They have three settings:

• MULTIPLE_INTERVAL_SELECTION (the default)

• SINGLE_INTERVAL_SELECTION

• SINGLE_SELECTION

The JTable has independent selection models for both rows and columns. The row selection
model is stored with the selectionModel property of the JTable . The column selection model is
stored with the TableColumnModel . Setting the selectionMode property of a JTable sets the selection
mode for the two independent selection models of the JTable .
Once a selection mode has been set and a user interacts with the component, you can ask
the selection model what happened, or, more precisely, what the user has selected. Table 18-2
lists the properties available to facilitate selection with the DefaultListSelectionModel .

Table 18-2. DefaultListSelectionModel Properties

Property Name Data Type Access

anchorSelectionIndex int

Read-write

leadAnchorNotificationEnabled boolean Read-write

leadSelectionIndex int

Read-write

listSelectionListeners ListSelectionListener[ ] Read-only

maxSelectionIndex int

Read-only

minSelectionIndex int

Read-only

selectionEmpty boolean

Read-only

selectionModel int Read-write

valueIsAdjusting boolean

Read-write

If you're interested in knowing when a selection event happens, register a
ListSelectionListener with the ListSelectionModel . The ListSelectionListener was
demonstrated in Chapter 13 with the JList component.

■ Note All table indices are zero-based. So, the first visual column is column 0 internally.

Auto-Resize Modes
The last subset of the JTable properties deals with the column-resize behavior of the JTable .
When the JTable is in a column or window that changes sizes, how does it react? Table 18-3
shows the five settings supported by a JTable .