Tables - The Definitive Guide to Java Swing - page 699

Table 18-8. DefaultTableColumnModel Properties

Property Name Data Type Access

columnCount int Read-only

columnMargin int Read-write

columnModelListeners TableColumnModelListener[ ] Read-only

columns Enumeration Read-only

columnSelectionAllowed boolean Read-write

selectedColumnCount int

Read-only

selectedColumns int[ ] Read-only

selectionModel ListSelectionModel Read-write

totalColumnWidth int

Read-only

In addition to the class properties, you can use the following methods to add, remove, and
move columns through the TableColumn class, which will be discussed shortly.

public void addColumn(TableColumn newColumn);
public void removeColumn(TableColumn oldColumn);
public void moveColumn(int currentIndex, int newIndex);

Listening to JTable Events with a TableColumnModelListener
One of the things you might want to do with a TableColumnModel is listen for
TableColumnModelEvent objects with a TableColumnModelListener . The listener will be notified
of any addition, removal, movement, or selection of columns, or changing of column margins,
as shown by the listener interface definition. Note that the different methods don't all receive
TableColumnModelEvent objects when the event happens.

public interface TableColumnModelListener extends EventListener {
public void columnAdded(TableColumnModelEvent e);
public void columnMarginChanged(ChangeEvent e);
public void columnMoved(TableColumnModelEvent e);
public void columnRemoved(TableColumnModelEvent e);
public void columnSelectionChanged(ListSelectionEvent e);
}

Because the listener definition identifies the event type, the TableColumnModelEvent definition
defines only the range of columns affected by the change, as shown in Table 18-9.

Table 18-9. TableColumnModelEvent Properties

Property Name Data Type Access

fromIndex int Read-only

toIndex int

Read-only