Java Foundation Classes in a Nutshell

CHAPTER 30

Thejavax.swing.text Package

This large and complex package contains the powerful JTextComponent text editor

and all of its supporting infrastructure. The JTextF ield, JTextArea, JEditorPane, and other

text input components of the javax.swing package all subclass JTextComponent and

rely on the other classes and interfaces of this package.

The Document inter face defines the data model for the JTextComponent.Itisthe basic

abstraction for documents that can be displayed and edited. The AbstractDocument

class implements this interface and provides a number of useful features and

extensions. StyledDocument extends Document to define support for documents that

have styles associated with their content. DefaultStyledDocument is a concrete imple-

mentation based on AbstractDocument. Other important classes and interfaces in this

package include: EditorKit, Element, View, AbstractDocument.Content, Caret, and High-

lighter. Figur e 30-1 shows the class hierarchy of this package.

AbstractDocument Ja va 1.2

javax.swing .text serializable

This class is a partial, abstract implementation of the Document inter face, which also

defines several important inner classes and interfaces. Typical applications do not have

to use or subclass this class. Instead, they can rely on predefined concrete implementa-

tions such as PlainDocument, DefaultStyledDocument, and javax.swing .text.html.HTMLDocument.

public abstract ...