Java Swing, 2nd Edition

The JDialog Class

JDialog is the Swing version of its superclass, java.awt.Dialog. It provides the same key features described in Chapter 8 ^[2] in the discussion of JWindow, JFrame, and JApplet: it uses a JRootPane as its container, and it provides default window-closing behavior. Since JDialog extends java.awt.Dialog, it has a heavyweight peer and is managed by the native windowing system. Figure 10-1 shows how JDialog fits into the class hierarchy.

Figure 10-1. JDialog class diagram

Properties

JDialog defines the properties and default values listed in Table 10-1. The content-Pane, glassPane, JMenuBar, and layeredPane properties are taken from rootPane, which is set to a new JRootPane by the constructor.

Table 10-1. JDialog properties

Property	Data type	get	is	set	Default value
accessibleContext o	AccessibleContext	·			JDialog.AccessibleJDialog( )
contentPane o	Container	·		·	From rootPane
defaultCloseOperation	int	·		·	HIDE_ON_CLOSE
defaultLookAndFeelDecorated s, 1.4	boolean		·	·	Depends on L&F, often false
glassPane o	Component	·		·	From rootPane
JMenuBar o	JMenuBar	·		·	null
layeredPane o	JLayeredPane	·		·	From rootPane
layout o	LayoutManager	·		·	BorderLayout
modal*	boolean		·	·	false
parent*	Container	·			SwingUtilities.get-SharedOwnerFrame( )
rootPane	JRootPane	·			JRootPane
title*	String	·		·	""
1.4since 1.4, ooverridden, sstatic *Inherited from Dialog; can be set in JDialog ...