Java Swing, 2nd Edition

The DefaultFormatterFactory Class

DefaultFormatterFactory is Swing’s only concrete implementation of AbstractFormatterFactory. It holds one or more formatters and decides which one to give to the field depending on whether the field has focus and whether the field’s value is null.

Properties

Table 20-7 shows the formatter properties defined by DefaultFormatterFactory.

Table 20-7. DefaultFormatterFactory properties

Property	Data type	get	is	set	Default value
defaultFormatter	JFormattedTextField.AbstractFormatter	·		·	null
displayFormatter	JFormattedTextField.AbstractFormatter	·		·	null
editFormatter	JFormattedTextField.AbstractFormatter	·		·	null
nullFormatter	JFormattedTextField.AbstractFormatter	·		·	null

defaultFormatter is used if one of the other formatter properties is null. It is common for defaultFormatter to be the only non-null formatter property, in which case the field uses the defaultFormatter exclusively.

displayFormatter is intended for use when the field does not have focus. It may be null, in which case defaultFormatter is used instead.

editFormatter is intended for use when the field has focus. It may be null, in which case defaultFormatter is used instead.

nullFormatter is intended for use when the field’s content is null. It may be null, in which case displayFormatter or editFormatter (depending on whether the field has focus) is used instead. (If displayFormatter/editFormatter is also null, defaultFormatter is used.)

Constructors

public DefaultFormatterFactory( )

Create a new DefaultFormatterFactory ...