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Java Swing, 2nd Edition
book

Java Swing, 2nd Edition

by Marc Loy, Robert Eckstein, Dave Wood, James Elliott, Brian Cole
November 2002
Intermediate to advanced
1280 pages
38h 26m
English
O'Reilly Media, Inc.
Content preview from Java Swing, 2nd Edition

The JCheckBox Class

The JCheckBox [5] class is shown in various L&Fs in Figure 5-7. JCheckBox is a subclass of JToggleButton and is typically used to allow the user to turn a given feature on or off or to make multiple selections from a set of choices. A JCheckBox is usually rendered by showing a small box into which a “check” is placed when selected (as shown in Figure 5-7). If you specify an icon for the checkbox, this icon replaces the default box. Therefore, if you specify an icon, you should always also supply a selected icon—otherwise, there is no way to tell if a checkbox is selected.

JCheckBoxes in four L&Fs

Figure 5-7. JCheckBoxes in four L&Fs

Properties

The JCheckBox class inherits most of its properties from its superclasses. The exceptions are shown in Table 5-12. By default, no border is painted on JCheckBoxes, and their horizontalAlignment is to the leading edge (which means to the left in the default locale, in which text reads left to right).[6] Setting the borderPaintedFlat property to true is a hint to the L&F that the checkbox should be drawn more plainly than usual. (This is used primarily by cell renderers for tables and trees.)

Table 5-12. JCheckBox properties

Property

Data type

get

is

set

Default value

accessibleContexto

AccessibleContext

·

  

AccessibleJCheckBox

borderPaintedo

boolean

 

·

·

false

borderPaintedFlat1.3, b

boolean

 

·

·

false

horizontalAlignmento

int

·

 

·

LEADING1.4

UIClassIDo

String

·

  

“CheckBoxUI” ...

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Publisher Resources

ISBN: 0596004087Errata Page