Class DefaultEditorKit

java.lang.Object

javax.swing.text.EditorKit

javax.swing.text.DefaultEditorKit

All Implemented Interfaces:: Serializable, Cloneable

Direct Known Subclasses:: StyledEditorKit

public class DefaultEditorKit extends EditorKit

This is the set of things needed by a text component to be a reasonably functioning editor for some type of text document. This implementation provides a default implementation which treats text as plain text and provides a minimal set of actions for a simple editor.

Newlines: There are two properties which deal with newlines. The system property, line.separator, is defined to be platform-dependent, either "\n", "\r", or "\r\n". There is also a property defined in DefaultEditorKit, called EndOfLineStringProperty, which is defined automatically when a document is loaded, to be the first occurrence of any of the newline characters. When a document is loaded, EndOfLineStringProperty is set appropriately, and when the document is written back out, the EndOfLineStringProperty is used. But while the document is in memory, the "\n" character is used to define a newline, regardless of how the newline is defined when the document is on disk. Therefore, for searching purposes, "\n" should always be used. When a new document is created, and the EndOfLineStringProperty has not been defined, it will use the System property when writing out the document.
Note that EndOfLineStringProperty is set on the Document using the get/putProperty methods. Subclasses may override this behavior.

Nested Class Summary

Modifier and Type	Class	Description
`static class`	`DefaultEditorKit.BeepAction`	Creates a beep.
`static class`	`DefaultEditorKit.CopyAction`	Copies the selected region and place its contents into the system clipboard.
`static class`	`DefaultEditorKit.CutAction`	Cuts the selected region and place its contents into the system clipboard.
`static class`	`DefaultEditorKit.DefaultKeyTypedAction`	The action that is executed by default if a key typed event is received and there is no keymap entry.
`static class`	`DefaultEditorKit.InsertBreakAction`	Places a line/paragraph break into the document.
`static class`	`DefaultEditorKit.InsertContentAction`	Places content into the associated document.
`static class`	`DefaultEditorKit.InsertTabAction`	Places a tab character into the document.
`static class`	`DefaultEditorKit.PasteAction`	Pastes the contents of the system clipboard into the selected region, or before the caret if nothing is selected.

Field Summary

Modifier and Type	Field	Description
`static final String`	`backwardAction`	Name of the Action for moving the caret logically backward one position.
`static final String`	`beepAction`	Name of the action to create a beep.
`static final String`	`beginAction`	Name of the `Action` for moving the caret to the beginning of the document.
`static final String`	`beginLineAction`	Name of the `Action` for moving the caret to the beginning of a line.
`static final String`	`beginLineUpAction`	Name of the `Action` for moving the caret to the beginning of the current line or up to the beginning of the previous line if the caret is already at the beginning of the line.
`static final String`	`beginParagraphAction`	Name of the `Action` for moving the caret to the beginning of a paragraph.
`static final String`	`beginWordAction`	Name of the `Action` for moving the caret to the beginning of a word.
`static final String`	`copyAction`	Name of the action to copy the selected region and place the contents into the system clipboard.
`static final String`	`cutAction`	Name of the action to cut the selected region and place the contents into the system clipboard.
`static final String`	`defaultKeyTypedAction`	Name of the action that is executed by default if a key typed event is received and there is no keymap entry.
`static final String`	`deleteNextCharAction`	Name of the action to delete the character of content that follows the current caret position.
`static final String`	`deleteNextWordAction`	Name of the action to delete the word that follows the beginning of the selection.
`static final String`	`deletePrevCharAction`	Name of the action to delete the character of content that precedes the current caret position.
`static final String`	`deletePrevWordAction`	Name of the action to delete the word that precedes the beginning of the selection.
`static final String`	`downAction`	Name of the Action for moving the caret logically downward one position.
`static final String`	`endAction`	Name of the `Action` for moving the caret to the end of the document.
`static final String`	`endLineAction`	Name of the `Action` for moving the caret to the end of a line.
`static final String`	`endLineDownAction`	Name of the `Action` for moving the caret to the end of the current line or down to the end of the next line if the caret is already at the end of the line.
`static final String`	`EndOfLineStringProperty`	When reading a document if a CRLF is encountered a property with this name is added and the value will be "\r\n".
`static final String`	`endParagraphAction`	Name of the `Action` for moving the caret to the end of a paragraph.
`static final String`	`endWordAction`	Name of the Action for moving the caret to the end of a word.
`static final String`	`forwardAction`	Name of the Action for moving the caret logically forward one position.
`static final String`	`insertBreakAction`	Name of the action to place a line/paragraph break into the document.
`static final String`	`insertContentAction`	Name of the action to place content into the associated document.
`static final String`	`insertTabAction`	Name of the action to place a tab character into the document.
`static final String`	`nextWordAction`	Name of the `Action` for moving the caret to the beginning of the next word.
`static final String`	`pageDownAction`	Name of the action to page down vertically.
`static final String`	`pageUpAction`	Name of the action to page up vertically.
`static final String`	`pasteAction`	Name of the action to paste the contents of the system clipboard into the selected region, or before the caret if nothing is selected.
`static final String`	`previousWordAction`	Name of the `Action` for moving the caret to the beginning of the previous word.
`static final String`	`readOnlyAction`	Name of the action to set the editor into read-only mode.
`static final String`	`selectAllAction`	Name of the Action for selecting the entire document
`static final String`	`selectionBackwardAction`	Name of the Action for extending the selection by moving the caret logically backward one position.
`static final String`	`selectionBeginAction`	Name of the `Action` for moving the caret to the beginning of the document.
`static final String`	`selectionBeginLineAction`	Name of the `Action` for moving the caret to the beginning of a line, extending the selection.
`static final String`	`selectionBeginParagraphAction`	Name of the `Action` for moving the caret to the beginning of a paragraph, extending the selection.
`static final String`	`selectionBeginWordAction`	Name of the `Action` for moving the caret to the beginning of a word, extending the selection.
`static final String`	`selectionDownAction`	Name of the Action for moving the caret logically downward one position, extending the selection.
`static final String`	`selectionEndAction`	Name of the Action for moving the caret to the end of the document.
`static final String`	`selectionEndLineAction`	Name of the `Action` for moving the caret to the end of a line, extending the selection.
`static final String`	`selectionEndParagraphAction`	Name of the `Action` for moving the caret to the end of a paragraph, extending the selection.
`static final String`	`selectionEndWordAction`	Name of the Action for moving the caret to the end of a word, extending the selection.
`static final String`	`selectionForwardAction`	Name of the Action for extending the selection by moving the caret logically forward one position.
`static final String`	`selectionNextWordAction`	Name of the `Action` for moving the selection to the beginning of the next word, extending the selection.
`static final String`	`selectionPreviousWordAction`	Name of the `Action` for moving the selection to the beginning of the previous word, extending the selection.
`static final String`	`selectionUpAction`	Name of the Action for moving the caret logically upward one position, extending the selection.
`static final String`	`selectLineAction`	Name of the Action for selecting a line around the caret.
`static final String`	`selectParagraphAction`	Name of the Action for selecting a paragraph around the caret.
`static final String`	`selectWordAction`	Name of the Action for selecting a word around the caret.
`static final String`	`upAction`	Name of the Action for moving the caret logically upward one position.
`static final String`	`writableAction`	Name of the action to set the editor into writeable mode.

Constructor Summary

Constructor	Description
`DefaultEditorKit()`	default constructor for DefaultEditorKit

Method Summary

Modifier and Type	Method	Description
`Caret`	`createCaret()`	Fetches a caret that can navigate through views produced by the associated ViewFactory.
`Document`	`createDefaultDocument()`	Creates an uninitialized text storage model (PlainDocument) that is appropriate for this type of editor.
`Action[]`	`getActions()`	Fetches the set of commands that can be used on a text component that is using a model and view produced by this kit.
`String`	`getContentType()`	Gets the MIME type of the data that this kit represents support for.
`ViewFactory`	`getViewFactory()`	Fetches a factory that is suitable for producing views of any models that are produced by this kit.
`void`	`read(InputStream in, Document doc, int pos)`	Inserts content from the given stream which is expected to be in a format appropriate for this kind of content handler.
`void`	`read(Reader in, Document doc, int pos)`	Inserts content from the given stream, which will be treated as plain text.
`void`	`write(OutputStream out, Document doc, int pos, int len)`	Writes content from a document to the given stream in a format appropriate for this kind of content handler.
`void`	`write(Writer out, Document doc, int pos, int len)`	Writes content from a document to the given stream as plain text.

Methods declared in class EditorKit

clone, deinstall, install

Modifier and Type	Method	Description
`Object`	`clone()`	Creates a copy of the editor kit.
`void`	`deinstall(JEditorPane c)`	Called when the kit is being removed from the JEditorPane.
`void`	`install(JEditorPane c)`	Called when the kit is being installed into the a JEditorPane.

Methods declared in class Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Modifier and Type	Method	Description
`boolean`	`equals(Object obj)`	Indicates whether some other object is "equal to" this one.
`protected void`	`finalize()`	Deprecated, for removal: This API element is subject to removal in a future version. Finalization is deprecated and subject to removal in a future release.
`final Class<?>`	`getClass()`	Returns the runtime class of this `Object`.
`int`	`hashCode()`	Returns a hash code value for this object.
`final void`	`notify()`	Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()`	Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()`	Returns a string representation of the object.
`final void`	`wait()`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
`final void`	`wait(long timeoutMillis)`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis, int nanos)`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

Field Details

EndOfLineStringProperty

public static final String EndOfLineStringProperty

When reading a document if a CRLF is encountered a property with this name is added and the value will be "\r\n".

See Also:

insertContentAction

public static final String insertContentAction

Name of the action to place content into the associated document. If there is a selection, it is removed before the new content is added.

See Also:

insertBreakAction

public static final String insertBreakAction

Name of the action to place a line/paragraph break into the document. If there is a selection, it is removed before the break is added.

See Also:

insertTabAction

public static final String insertTabAction

Name of the action to place a tab character into the document. If there is a selection, it is removed before the tab is added.

See Also:

deletePrevCharAction

public static final String deletePrevCharAction

Name of the action to delete the character of content that precedes the current caret position.

See Also:

deleteNextCharAction

public static final String deleteNextCharAction

Name of the action to delete the character of content that follows the current caret position.

See Also:

deleteNextWordAction

public static final String deleteNextWordAction

Name of the action to delete the word that follows the beginning of the selection.

Since:

1.6

See Also:

deletePrevWordAction

public static final String deletePrevWordAction

Name of the action to delete the word that precedes the beginning of the selection.

Since:

1.6

See Also:

readOnlyAction

public static final String readOnlyAction

Name of the action to set the editor into read-only mode.

See Also:

writableAction

public static final String writableAction

Name of the action to set the editor into writeable mode.

See Also:

cutAction

public static final String cutAction

Name of the action to cut the selected region and place the contents into the system clipboard.

See Also:

copyAction

public static final String copyAction

Name of the action to copy the selected region and place the contents into the system clipboard.

See Also:

pasteAction

public static final String pasteAction

Name of the action to paste the contents of the system clipboard into the selected region, or before the caret if nothing is selected.

See Also:

beepAction

public static final String beepAction

Name of the action to create a beep.

See Also:

pageUpAction

public static final String pageUpAction

Name of the action to page up vertically.

See Also:

pageDownAction

public static final String pageDownAction

Name of the action to page down vertically.

See Also:

forwardAction

public static final String forwardAction

Name of the Action for moving the caret logically forward one position.

See Also:

backwardAction

public static final String backwardAction

Name of the Action for moving the caret logically backward one position.

See Also:

selectionForwardAction

public static final String selectionForwardAction

Name of the Action for extending the selection by moving the caret logically forward one position.

See Also:

selectionBackwardAction

public static final String selectionBackwardAction

Name of the Action for extending the selection by moving the caret logically backward one position.

See Also:

upAction

public static final String upAction

Name of the Action for moving the caret logically upward one position.

See Also:

downAction

public static final String downAction

Name of the Action for moving the caret logically downward one position.

See Also:

selectionUpAction

public static final String selectionUpAction

Name of the Action for moving the caret logically upward one position, extending the selection.

See Also:

selectionDownAction

public static final String selectionDownAction

Name of the Action for moving the caret logically downward one position, extending the selection.

See Also:

beginWordAction

public static final String beginWordAction

Name of the Action for moving the caret to the beginning of a word.

See Also:

endWordAction

public static final String endWordAction

Name of the Action for moving the caret to the end of a word.

See Also:

selectionBeginWordAction

public static final String selectionBeginWordAction

Name of the Action for moving the caret to the beginning of a word, extending the selection.

See Also:

selectionEndWordAction

public static final String selectionEndWordAction

Name of the Action for moving the caret to the end of a word, extending the selection.

See Also:

previousWordAction

public static final String previousWordAction

Name of the Action for moving the caret to the beginning of the previous word.

See Also:

nextWordAction

public static final String nextWordAction

Name of the Action for moving the caret to the beginning of the next word.

See Also:

selectionPreviousWordAction

public static final String selectionPreviousWordAction

Name of the Action for moving the selection to the beginning of the previous word, extending the selection.

See Also:

selectionNextWordAction

public static final String selectionNextWordAction

Name of the Action for moving the selection to the beginning of the next word, extending the selection.

See Also:

beginLineAction

public static final String beginLineAction

Name of the Action for moving the caret to the beginning of a line.

See Also:

endLineAction

public static final String endLineAction

Name of the Action for moving the caret to the end of a line.

See Also:

beginLineUpAction

public static final String beginLineUpAction

Name of the Action for moving the caret to the beginning of the current line or up to the beginning of the previous line if the caret is already at the beginning of the line.

Since:

See Also:

endLineDownAction

public static final String endLineDownAction

Name of the Action for moving the caret to the end of the current line or down to the end of the next line if the caret is already at the end of the line.

Since:

See Also:

selectionBeginLineAction

public static final String selectionBeginLineAction

Name of the Action for moving the caret to the beginning of a line, extending the selection.

See Also:

selectionEndLineAction

public static final String selectionEndLineAction

Name of the Action for moving the caret to the end of a line, extending the selection.

See Also:

beginParagraphAction

public static final String beginParagraphAction

Name of the Action for moving the caret to the beginning of a paragraph.

See Also:

endParagraphAction

public static final String endParagraphAction

Name of the Action for moving the caret to the end of a paragraph.

See Also:

selectionBeginParagraphAction

public static final String selectionBeginParagraphAction

Name of the Action for moving the caret to the beginning of a paragraph, extending the selection.

See Also:

selectionEndParagraphAction

public static final String selectionEndParagraphAction

Name of the Action for moving the caret to the end of a paragraph, extending the selection.

See Also:

beginAction

public static final String beginAction

Name of the Action for moving the caret to the beginning of the document.

See Also:

endAction

public static final String endAction

Name of the Action for moving the caret to the end of the document.

See Also:

selectionBeginAction

public static final String selectionBeginAction

Name of the Action for moving the caret to the beginning of the document.

See Also:

selectionEndAction

public static final String selectionEndAction

Name of the Action for moving the caret to the end of the document.

See Also:

selectWordAction

public static final String selectWordAction

Name of the Action for selecting a word around the caret.

See Also:

selectLineAction

public static final String selectLineAction

Name of the Action for selecting a line around the caret.

See Also:

selectParagraphAction

public static final String selectParagraphAction

Name of the Action for selecting a paragraph around the caret.

See Also:

selectAllAction

public static final String selectAllAction

Name of the Action for selecting the entire document

See Also:

defaultKeyTypedAction

public static final String defaultKeyTypedAction

Name of the action that is executed by default if a key typed event is received and there is no keymap entry.

See Also:

Constructor Details

DefaultEditorKit

public DefaultEditorKit()

default constructor for DefaultEditorKit

Method Details

getContentType

public String getContentType()

Gets the MIME type of the data that this kit represents support for. The default is text/plain.

Specified by:: getContentType in class EditorKit
Returns:: the type

getViewFactory

public ViewFactory getViewFactory()

Fetches a factory that is suitable for producing views of any models that are produced by this kit. The default is to have the UI produce the factory, so this method has no implementation.

Specified by:: getViewFactory in class EditorKit
Returns:: the view factory

getActions

public Action[] getActions()

Fetches the set of commands that can be used on a text component that is using a model and view produced by this kit.

Specified by:: getActions in class EditorKit
Returns:: the command list

createCaret

public Caret createCaret()

Fetches a caret that can navigate through views produced by the associated ViewFactory.

Specified by:: createCaret in class EditorKit
Returns:: the caret

createDefaultDocument

public Document createDefaultDocument()

Creates an uninitialized text storage model (PlainDocument) that is appropriate for this type of editor.

Specified by:: createDefaultDocument in class EditorKit
Returns:: the model

read

public void read(InputStream in, Document doc, int pos) throws IOException, BadLocationException

Inserts content from the given stream which is expected to be in a format appropriate for this kind of content handler.

Specified by:: read in class EditorKit
Parameters:: in - The stream to read from; doc - The destination for the insertion.; pos - The location in the document to place the content >=0.
Throws:: IOException - on any I/O error; BadLocationException - if pos represents an invalid location within the document.

write

public void write(OutputStream out, Document doc, int pos, int len) throws IOException, BadLocationException

Writes content from a document to the given stream in a format appropriate for this kind of content handler.

Specified by:: write in class EditorKit
Parameters:: out - The stream to write to; doc - The source for the write.; pos - The location in the document to fetch the content >=0.; len - The amount to write out >=0.
Throws:: IOException - on any I/O error; BadLocationException - if pos represents an invalid location within the document.

read

public void read(Reader in, Document doc, int pos) throws IOException, BadLocationException

Inserts content from the given stream, which will be treated as plain text.

Specified by:: read in class EditorKit
Parameters:: in - The stream to read from; doc - The destination for the insertion.; pos - The location in the document to place the content >=0.
Throws:: IOException - on any I/O error; BadLocationException - if pos represents an invalid location within the document.

write

public void write(Writer out, Document doc, int pos, int len) throws IOException, BadLocationException

Writes content from a document to the given stream as plain text.

Specified by:: write in class EditorKit
Parameters:: out - The stream to write to; doc - The source for the write.; pos - The location in the document to fetch the content from >=0.; len - The amount to write out >=0.
Throws:: IOException - on any I/O error; BadLocationException - if pos is not within 0 and the length of the document.

© 1993, 2025, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.