| Package | Description | 
|---|---|
| javax.swing.text | 
 Provides classes and interfaces that deal with editable
and noneditable text components. 
 | 
| javax.swing.undo | 
 Allows developers to provide support for undo/redo
in applications such as text editors. 
 | 
| Modifier and Type | Class and Description | 
|---|---|
class  | 
AbstractDocument.DefaultDocumentEvent
Stores document changes as the document is being
 modified. 
 | 
| Modifier and Type | Class and Description | 
|---|---|
class  | 
UndoManager
UndoManager manages a list of UndoableEdits,
 providing a way to undo or redo the appropriate edits. | 
| Modifier and Type | Field and Description | 
|---|---|
protected CompoundEdit | 
UndoableEditSupport.compoundEdit  | 
| Modifier and Type | Method and Description | 
|---|---|
protected CompoundEdit | 
UndoableEditSupport.createCompoundEdit()
Called only from  
beginUpdate. | 
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