Module java.desktop

# Package javax.swing.undo

package javax.swing.undo
Allows developers to provide support for undo/redo in applications such as text editors.

Note: Most of the Swing API is not thread safe. For details, see Concurrency in Swing, a section in The Java Tutorial.

## Related Documentation

For overviews, tutorials, examples, guides, and tool documentation, please see:

- Implementing Undo and Redo, a section in The Java Tutorial

Since:
  1.2

Related Packages
Package
Description
javax.swing
Provides a set of "lightweight" (all-Java language) components that, to the maximum degree possible, work the same on all platforms.
Class
Description
AbstractUndoableEdit
An abstract implementation of `UndoableEdit`, implementing simple responses to all boolean methods in that interface.
CannotRedoException
Thrown when an UndoableEdit is told to `redo()` and can't.
CannotUndoException
Thrown when an UndoableEdit is told to `undo()` and can't.
CompoundEdit
A concrete subclass of AbstractUndoableEdit, used to assemble little UndoableEdits into great big ones.
StateEdit
StateEdit is a general edit for objects that change state.
StateEditable
StateEditable defines the interface for objects that can have their state undone/redone by a StateEdit.
UndoableEdit
An `UndoableEdit` represents an edit.
UndoableEditSupport
A support class used for managing `UndoableEdit` listeners.
UndoManager
`UndoManager` manages a list of `UndoableEdits`, providing a way to undo or redo the appropriate edits.