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javax.swing
Class JFileChooser
java.lang.Object
java.awt.Component
java.awt.Container
javax.swing.JComponent
javax.swing.JFileChooser
-
All Implemented Interfaces:
-
Accessible
,
ImageObserver
,
MenuContainer
,
Serializable
-
public class
JFileChooser
-
extends
JComponent
-
implements
Accessible
JFileChooser provides a simple mechanism for the user to choose a file. For information about using JFileChooser, see
How to Use File Choosers
, a section in The Java Tutorial.
The following code pops up a file chooser for the user's home directory that sees only .jpg and .gif images:
JFileChooser chooser = new JFileChooser();
// Note: source for ExampleFileFilter can be found in FileChooserDemo,
// under the demo/jfc directory in the Java 2 SDK, Standard Edition.
ExampleFileFilter filter = new ExampleFileFilter();
filter.addExtension("jpg");
filter.addExtension("gif");
filter.setDescription("JPG & GIF Images");
chooser.setFileFilter(filter);
int returnVal = chooser.showOpenDialog(parent);
if(returnVal == JFileChooser.APPROVE_OPTION) {
System.out.println("You chose to open this file: " +
chooser.getSelectedFile().getName());
}
Nested Class Summary
|
protected class |
JFileChooser.AccessibleJFileChooser
This class implements accessibility support for the JFileChooser class. |
Nested classes inherited from class java.awt.
Component
|
Component.AccessibleAWTComponent
,
Component.BltBufferStrategy
,
Component.FlipBufferStrategy
|
Fields inherited from interface java.awt.image.
ImageObserver
|
ABORT
,
ALLBITS
,
ERROR
,
FRAMEBITS
,
HEIGHT
,
PROPERTIES
,
SOMEBITS
,
WIDTH
|
Constructor Summary
|
JFileChooser
()
Constructs a JFileChooser pointing to the user's default directory. |
JFileChooser
(
File
currentDirectory)
Constructs a JFileChooser using the given File as the path. |
JFileChooser
(
File
currentDirectory,
FileSystemView
fsv)
Constructs a JFileChooser using the given current directory and FileSystemView. |
JFileChooser
(
FileSystemView
fsv)
Constructs a JFileChooser using the given FileSystemView. |
JFileChooser
(
String
currentDirectoryPath)
Constructs a JFileChooser using the given path. |
JFileChooser
(
String
currentDirectoryPath,
FileSystemView
fsv)
Constructs a JFileChooser using the given current directory path and FileSystemView. |
Method Summary
|
boolean |
accept
(
File
f)
Returns true if the file should be displayed. |
void |
addActionListener
(
ActionListener
l)
Adds an ActionListener to the file chooser. |
void |
addChoosableFileFilter
(
FileFilter
filter)
Adds a filter to the list of user choosable file filters. |
void |
approveSelection
()
Called by the UI when the user hits the Approve button (labeled "Open" or "Save", by default). |
void |
cancelSelection
()
Called by the UI when the user chooses the Cancel button. |
void |
changeToParentDirectory
()
Changes the directory to be set to the parent of the current directory. |
protected
JDialog
|
createDialog
(
Component
parent)
Creates and returns a new JDialog wrapping this centered on the parent in the parent's frame. |
void |
ensureFileIsVisible
(
File
f)
Makes sure that the specified file is viewable, and not hidden. |
protected void |
fireActionPerformed
(
String
command)
Notifies all listeners that have registered interest for notification on this event type. |
FileFilter
|
getAcceptAllFileFilter
()
Returns the AcceptAll file filter. |
AccessibleContext
|
getAccessibleContext
()
Gets the AccessibleContext associated with this JFileChooser. |
JComponent
|
getAccessory
()
Returns the accessory component. |
ActionListener
[] |
getActionListeners
()
Returns an array of all the action listeners registered on this file chooser. |
int |
getApproveButtonMnemonic
()
Returns the approve button's mnemonic. |
String
|
getApproveButtonText
()
Returns the text used in the ApproveButton in the FileChooserUI. |
String
|
getApproveButtonToolTipText
()
Returns the tooltip text used in the ApproveButton. |
FileFilter
[] |
getChoosableFileFilters
()
Gets the list of user choosable file filters. |
boolean |
getControlButtonsAreShown
()
Returns the value of the controlButtonsAreShown property. |
File
|
getCurrentDirectory
()
Returns the current directory. |
String
|
getDescription
(
File
f)
Returns the file description. |
String
|
getDialogTitle
()
Gets the string that goes in the JFileChooser's titlebar. |
int |
getDialogType
()
Returns the type of this dialog. |
boolean |
getDragEnabled
()
Gets the value of the dragEnabled property. |
FileFilter
|
getFileFilter
()
Returns the currently selected file filter. |
int |
getFileSelectionMode
()
Returns the current file-selection mode. |
FileSystemView
|
getFileSystemView
()
Returns the file system view. |
FileView
|
getFileView
()
Returns the current file view. |
Icon
|
getIcon
(
File
f)
Returns the icon for this file or type of file, depending on the system. |
String
|
getName
(
File
f)
Returns the filename. |
File
|
getSelectedFile
()
Returns the selected file. |
File
[] |
getSelectedFiles
()
Returns a list of selected files if the file chooser is set to allow multiple selection. |
String
|
getTypeDescription
(
File
f)
Returns the file type. |
FileChooserUI
|
getUI
()
Gets the UI object which implements the L&F for this component. |
String
|
getUIClassID
()
Returns a string that specifies the name of the L&F class that renders this component. |
boolean |
isAcceptAllFileFilterUsed
()
Returns whether the AcceptAll FileFilter is used. |
boolean |
isDirectorySelectionEnabled
()
Convenience call that determines if directories are selectable based on the current file selection mode. |
boolean |
isFileHidingEnabled
()
Returns true if hidden files are not shown in the file chooser; otherwise, returns false. |
boolean |
isFileSelectionEnabled
()
Convenience call that determines if files are selectable based on the current file selection mode. |
boolean |
isMultiSelectionEnabled
()
Returns true if multiple files can be selected. |
boolean |
isTraversable
(
File
f)
Returns true if the file (directory) can be visited. |
protected
String
|
paramString
()
Returns a string representation of this JFileChooser. |
void |
removeActionListener
(
ActionListener
l)
Removes an ActionListener from the file chooser. |
boolean |
removeChoosableFileFilter
(
FileFilter
f)
Removes a filter from the list of user choosable file filters. |
void |
rescanCurrentDirectory
()
Tells the UI to rescan its files list from the current directory. |
void |
resetChoosableFileFilters
()
Resets the choosable file filter list to its starting state. |
void |
setAcceptAllFileFilterUsed
(boolean b)
Determines whether the AcceptAll FileFilter is used as an available choice in the choosable filter list. |
void |
setAccessory
(
JComponent
newAccessory)
Sets the accessory component. |
void |
setApproveButtonMnemonic
(char mnemonic)
Sets the approve button's mnemonic using a character. |
void |
setApproveButtonMnemonic
(int mnemonic)
Sets the approve button's mnemonic using a numeric keycode. |
void |
setApproveButtonText
(
String
approveButtonText)
Sets the text used in the ApproveButton in the FileChooserUI. |
void |
setApproveButtonToolTipText
(
String
toolTipText)
Sets the tooltip text used in the ApproveButton. |
void |
setControlButtonsAreShown
(boolean b)
Sets the property that indicates whether the
approve
and
cancel
buttons are shown in the file chooser. |
void |
setCurrentDirectory
(
File
dir)
Sets the current directory. |
void |
setDialogTitle
(
String
dialogTitle)
Sets the string that goes in the JFileChooser window's title bar. |
void |
setDialogType
(int dialogType)
Sets the type of this dialog. |
void |
setDragEnabled
(boolean b)
Sets the dragEnabled property, which must be true to enable automatic drag handling (the first part of drag and drop) on this component. |
void |
setFileFilter
(
FileFilter
filter)
Sets the current file filter. |
void |
setFileHidingEnabled
(boolean b)
Sets file hiding on or off. |
void |
setFileSelectionMode
(int mode)
Sets the JFileChooser to allow the user to just select files, just select directories, or select both files and directories. |
void |
setFileSystemView
(
FileSystemView
fsv)
Sets the file system view that the JFileChooser uses for accessing and creating file system resources, such as finding the floppy drive and getting a list of root drives. |
void |
setFileView
(
FileView
fileView)
Sets the file view to used to retrieve UI information, such as the icon that represents a file or the type description of a file. |
void |
setMultiSelectionEnabled
(boolean b)
Sets the file chooser to allow multiple file selections. |
void |
setSelectedFile
(
File
file)
Sets the selected file. |
void |
setSelectedFiles
(
File
[] selectedFiles)
Sets the list of selected files if the file chooser is set to allow multiple selection. |
protected void |
setup
(
FileSystemView
view)
Performs common constructor initialization and setup. |
int |
showDialog
(
Component
parent,
String
approveButtonText)
Pops a custom file chooser dialog with a custom approve button. |
int |
showOpenDialog
(
Component
parent)
Pops up an "Open File" file chooser dialog. |
int |
showSaveDialog
(
Component
parent)
Pops up a "Save File" file chooser dialog. |
void |
updateUI
()
Resets the UI property to a value from the current look and feel. |
Methods inherited from class javax.swing.
JComponent
|
addAncestorListener
,
addNotify
,
addPropertyChangeListener
,
addPropertyChangeListener
,
addVetoableChangeListener
,
computeVisibleRect
,
contains
,
createToolTip
,
disable
,
enable
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
fireVetoableChange
,
getActionForKeyStroke
,
getActionMap
,
getAlignmentX
,
getAlignmentY
,
getAncestorListeners
,
getAutoscrolls
,
getBorder
,
getBounds
,
getClientProperty
,
getComponentGraphics
,
getComponentPopupMenu
,
getConditionForKeyStroke
,
getDebugGraphicsOptions
,
getDefaultLocale
,
getFontMetrics
,
getGraphics
,
getHeight
,
getInheritsPopupMenu
,
getInputMap
,
getInputMap
,
getInputVerifier
,
getInsets
,
getInsets
,
getListeners
,
getLocation
,
getMaximumSize
,
getMinimumSize
,
getNextFocusableComponent
,
getPopupLocation
getPreferredSize
,
getPreferredSize
getPropertyChangeListeners
,
getPropertyChangeListeners
,
getRegisteredKeyStrokes
,
getRootPane
,
getSize
,
getToolTipLocation
,
getToolTipText
,
getToolTipText
,
getTopLevelAncestor
,
getTransferHandler
,
getVerifyInputWhenFocusTarget
,
getVetoableChangeListeners
,
getVisibleRect
,
getWidth
,
getX
,
getY
,
grabFocus
,
isDoubleBuffered
,
isLightweightComponent
,
isManagingFocus
,
isMaximumSizeSet
,
isMinimumSizeSet
,
isOpaque
,
isOptimizedDrawingEnabled
,
isPaintingTile
,
isPreferredSizeSet
,
isRequestFocusEnabled
,
isValidateRoot
,
paint
,
paintBorder
,
paintChildren
,
paintComponent
,
paintImmediately
,
paintImmediately
,
print
,
printAll
,
printBorder
,
printChildren
,
printComponent
,
processComponentKeyEvent
,
processKeyBinding
,
processKeyEvent
,
processMouseEvent
,
processMouseMotionEvent
,
putClientProperty
,
registerKeyboardAction
,
registerKeyboardAction
,
removeAncestorListener
,
removeNotify
,
removePropertyChangeListener
,
removePropertyChangeListener
,
removeVetoableChangeListener
,
repaint
,
repaint
,
requestDefaultFocus
,
requestFocus
,
requestFocus
,
requestFocusInWindow
,
requestFocusInWindow
,
resetKeyboardActions
,
reshape
,
revalidate
,
scrollRectToVisible
,
setActionMap
,
setAlignmentX
,
setAlignmentY
,
setAutoscrolls
,
setBackground
,
setBorder
,
setComponentPopupMenu
,
setDebugGraphicsOptions
,
setDefaultLocale
,
setDoubleBuffered
,
setEnabled
,
setFocusTraversalKeys
,
setFont
,
setForeground
,
setInheritsPopupMenu
,
setInputMap
,
setInputVerifier
,
setMaximumSize
,
setMinimumSize
,
setNextFocusableComponent
,
setOpaque
,
setPreferredSize
,
setRequestFocusEnabled
,
setToolTipText
,
setTransferHandler
,
setUI
,
setVerifyInputWhenFocusTarget
,
setVisible
,
unregisterKeyboardAction
,
update
|
Methods inherited from class java.awt.
Container
|
add
,
add
,
add
,
add
,
add
,
addContainerListener
,
addImpl
,
addPropertyChangeListener
,
addPropertyChangeListener
,
applyComponentOrientation
,
areFocusTraversalKeysSet
,
countComponents
,
deliverEvent
,
doLayout
,
findComponentAt
,
findComponentAt
,
getComponent
,
getComponentAt
,
getComponentAt
,
getComponentCount
,
getComponents
,
getComponentZOrder
,
getContainerListeners
,
getFocusTraversalKeys
,
getFocusTraversalPolicy
,
getLayout
,
getMousePosition
,
insets
,
invalidate
,
isAncestorOf
,
isFocusCycleRoot
,
isFocusCycleRoot
,
isFocusTraversalPolicyProvider
,
isFocusTraversalPolicySet
,
layout
,
list
,
list
,
locate
,
minimumSize
,
paintComponents
,
preferredSize
,
printComponents
,
processContainerEvent
,
processEvent
,
remove
,
remove
,
removeAll
,
removeContainerListener
,
setComponentZOrder
setFocusCycleRoot
,
setFocusCycleRoot
setFocusTraversalKeys
,
setFocusTraversalPolicy
,
setFocusTraversalPolicyProvider
,
setLayout
,
transferFocusBackward
,
transferFocusDownCycle
,
validate
,
validateTree
|
Methods inherited from class java.awt.
Component
|
action
,
add
,
addComponentListener
,
addFocusListener
,
addHierarchyBoundsListener
,
addHierarchyListener
,
addInputMethodListener
,
addKeyListener
,
addMouseListener
,
addMouseMotionListener
,
addMouseWheelListener
,
bounds
,
checkImage
,
checkImage
,
coalesceEvents
,
contains
,
createImage
,
createImage
,
createVolatileImage
,
createVolatileImage
,
disableEvents
,
dispatchEvent
,
enable
,
enableEvents
,
enableInputMethods
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
firePropertyChange
,
getBackground
,
getBounds
,
getColorModel
,
getComponentListeners
,
getComponentOrientation
,
getCursor
,
getDropTarget
,
getFocusCycleRootAncestor
,
getFocusListeners
,
getFocusTraversalKeysEnabled
,
getFont
,
getFontMetrics
,
getForeground
,
getGraphicsConfiguration
,
getHierarchyBoundsListeners
,
getHierarchyListeners
,
getIgnoreRepaint
,
getInputContext
,
getInputMethodListeners
,
getInputMethodRequests
,
getKeyListeners
,
getLocale
,
getLocation
,
getLocationOnScreen
,
getMouseListeners
,
getMouseMotionListeners
,
getMousePosition
,
getMouseWheelListeners
,
getName
,
getParent
,
getPeer
,
getPropertyChangeListeners
,
getPropertyChangeListeners
,
getSize
,
getToolkit
,
getTreeLock
,
gotFocus
,
handleEvent
,
hasFocus
,
hide
,
imageUpdate
,
inside
,
isBackgroundSet
,
isCursorSet
,
isDisplayable
,
isEnabled
,
isFocusable
,
isFocusOwner
,
isFocusTraversable
,
isFontSet
,
isForegroundSet
,
isLightweight
,
isMaximumSizeSet
,
isMinimumSizeSet
,
isPreferredSizeSet
,
isShowing
,
isValid
,
isVisible
,
keyDown
,
keyUp
,
list
,
list
,
list
,
location
,
lostFocus
,
mouseDown
,
mouseDrag
,
mouseEnter
,
mouseExit
,
mouseMove
,
mouseUp
,
move
,
nextFocus
,
paintAll
,
postEvent
,
prepareImage
,
prepareImage
,
processComponentEvent
,
processFocusEvent
,
processHierarchyBoundsEvent
,
processHierarchyEvent
,
processInputMethodEvent
,
processMouseEvent
,
processMouseWheelEvent
,
remove
,
removeComponentListener
,
removeFocusListener
,
removeHierarchyBoundsListener
,
removeHierarchyListener
,
removeInputMethodListener
,
removeKeyListener
,
removeMouseListener
,
removeMouseMotionListener
,
removeMouseWheelListener
,
removePropertyChangeListener
,
removePropertyChangeListener
,
repaint
,
repaint
,
repaint
,
resize
,
resize
,
setBounds
,
setBounds
,
setComponentOrientation
,
setCursor
,
setDropTarget
,
setFocusable
,
setFocusTraversalKeysEnabled
,
setIgnoreRepaint
,
setLocale
,
setLocation
,
setLocation
,
setName
,
setSize
,
setSize
,
show
,
show
,
size
,
toString
,
transferFocus
,
transferFocusUpCycle
|
OPEN_DIALOG
public static final int OPEN_DIALOG
-
Type value indicating that the JFileChooser supports an "Open" file operation.
-
See Also:
-
Constant Field Values
SAVE_DIALOG
public static final int SAVE_DIALOG
-
Type value indicating that the JFileChooser supports a "Save" file operation.
-
See Also:
-
Constant Field Values
CUSTOM_DIALOG
public static final int CUSTOM_DIALOG
-
Type value indicating that the JFileChooser supports a developer-specified file operation.
-
See Also:
-
Constant Field Values
CANCEL_OPTION
public static final int CANCEL_OPTION
-
Return value if cancel is chosen.
-
See Also:
-
Constant Field Values
APPROVE_OPTION
public static final int APPROVE_OPTION
-
Return value if approve (yes, ok) is chosen.
-
See Also:
-
Constant Field Values
ERROR_OPTION
public static final int ERROR_OPTION
-
Return value if an error occured.
-
See Also:
-
Constant Field Values
FILES_ONLY
public static final int FILES_ONLY
-
Instruction to display only files.
-
See Also:
-
Constant Field Values
DIRECTORIES_ONLY
public static final int DIRECTORIES_ONLY
-
Instruction to display only directories.
-
See Also:
-
Constant Field Values
FILES_AND_DIRECTORIES
public static final int FILES_AND_DIRECTORIES
-
Instruction to display both files and directories.
-
See Also:
-
Constant Field Values
CANCEL_SELECTION
public static final String CANCEL_SELECTION
-
Instruction to cancel the current selection.
-
See Also:
-
Constant Field Values
APPROVE_SELECTION
public static final String APPROVE_SELECTION
-
Instruction to approve the current selection (same as pressing yes or ok).
-
See Also:
-
Constant Field Values
APPROVE_BUTTON_TEXT_CHANGED_PROPERTY
public static final String APPROVE_BUTTON_TEXT_CHANGED_PROPERTY
-
Identifies change in the text on the approve (yes, ok) button.
-
See Also:
-
Constant Field Values
APPROVE_BUTTON_TOOL_TIP_TEXT_CHANGED_PROPERTY
public static final String APPROVE_BUTTON_TOOL_TIP_TEXT_CHANGED_PROPERTY
-
Identifies change in the tooltip text for the approve (yes, ok) button.
-
See Also:
-
Constant Field Values
APPROVE_BUTTON_MNEMONIC_CHANGED_PROPERTY
public static final String APPROVE_BUTTON_MNEMONIC_CHANGED_PROPERTY
-
Identifies change in the mnemonic for the approve (yes, ok) button.
-
See Also:
-
Constant Field Values
CONTROL_BUTTONS_ARE_SHOWN_CHANGED_PROPERTY
public static final String CONTROL_BUTTONS_ARE_SHOWN_CHANGED_PROPERTY
-
Instruction to display the control buttons.
-
See Also:
-
Constant Field Values
DIRECTORY_CHANGED_PROPERTY
public static final String DIRECTORY_CHANGED_PROPERTY
-
Identifies user's directory change.
-
See Also:
-
Constant Field Values
SELECTED_FILE_CHANGED_PROPERTY
public static final String SELECTED_FILE_CHANGED_PROPERTY
-
Identifies change in user's single-file selection.
-
See Also:
-
Constant Field Values
SELECTED_FILES_CHANGED_PROPERTY
public static final String SELECTED_FILES_CHANGED_PROPERTY
-
Identifies change in user's multiple-file selection.
-
See Also:
-
Constant Field Values
MULTI_SELECTION_ENABLED_CHANGED_PROPERTY
public static final String MULTI_SELECTION_ENABLED_CHANGED_PROPERTY
-
Enables multiple-file selections.
-
See Also:
-
Constant Field Values
FILE_SYSTEM_VIEW_CHANGED_PROPERTY
public static final String FILE_SYSTEM_VIEW_CHANGED_PROPERTY
-
Says that a different object is being used to find available drives on the system.
-
See Also:
-
Constant Field Values
FILE_VIEW_CHANGED_PROPERTY
public static final String FILE_VIEW_CHANGED_PROPERTY
-
Says that a different object is being used to retrieve file information.
-
See Also:
-
Constant Field Values
FILE_HIDING_CHANGED_PROPERTY
public static final String FILE_HIDING_CHANGED_PROPERTY
-
Identifies a change in the display-hidden-files property.
-
See Also:
-
Constant Field Values
FILE_FILTER_CHANGED_PROPERTY
public static final String FILE_FILTER_CHANGED_PROPERTY
-
User changed the kind of files to display.
-
See Also:
-
Constant Field Values
FILE_SELECTION_MODE_CHANGED_PROPERTY
public static final String FILE_SELECTION_MODE_CHANGED_PROPERTY
-
Identifies a change in the kind of selection (single, multiple, etc.).
-
See Also:
-
Constant Field Values
ACCESSORY_CHANGED_PROPERTY
public static final String ACCESSORY_CHANGED_PROPERTY
-
Says that a different accessory component is in use (for example, to preview files).
-
See Also:
-
Constant Field Values
ACCEPT_ALL_FILE_FILTER_USED_CHANGED_PROPERTY
public static final String ACCEPT_ALL_FILE_FILTER_USED_CHANGED_PROPERTY
-
Identifies whether a the AcceptAllFileFilter is used or not.
-
See Also:
-
Constant Field Values
DIALOG_TITLE_CHANGED_PROPERTY
public static final String DIALOG_TITLE_CHANGED_PROPERTY
-
Identifies a change in the dialog title.
-
See Also:
-
Constant Field Values
DIALOG_TYPE_CHANGED_PROPERTY
public static final String DIALOG_TYPE_CHANGED_PROPERTY
-
Identifies a change in the type of files displayed (files only, directories only, or both files and directories).
-
See Also:
-
Constant Field Values
CHOOSABLE_FILE_FILTER_CHANGED_PROPERTY
public static final String CHOOSABLE_FILE_FILTER_CHANGED_PROPERTY
-
Identifies a change in the list of predefined file filters the user can choose from.
-
See Also:
-
Constant Field Values
accessibleContext
protected AccessibleContext accessibleContext
JFileChooser
public JFileChooser()
-
Constructs a JFileChooser pointing to the user's default directory. This default depends on the operating system. It is typically the "My Documents" folder on Windows, and the user's home directory on Unix.
JFileChooser
public JFileChooser(String currentDirectoryPath)
-
Constructs a JFileChooser using the given path. Passing in a null string causes the file chooser to point to the user's default directory. This default depends on the operating system. It is typically the "My Documents" folder on Windows, and the user's home directory on Unix.
-
Parameters:
-
currentDirectoryPath - a String giving the path to a file or directory
JFileChooser
public JFileChooser(File currentDirectory)
-
Constructs a JFileChooser using the given File as the path. Passing in a null file causes the file chooser to point to the user's default directory. This default depends on the operating system. It is typically the "My Documents" folder on Windows, and the user's home directory on Unix.
-
Parameters:
-
currentDirectory - a File object specifying the path to a file or directory
JFileChooser
public JFileChooser(FileSystemView fsv)
-
Constructs a JFileChooser using the given FileSystemView.
JFileChooser
public JFileChooser(File currentDirectory,
FileSystemView fsv)
-
Constructs a JFileChooser using the given current directory and FileSystemView.
JFileChooser
public JFileChooser(String currentDirectoryPath,
FileSystemView fsv)
-
Constructs a JFileChooser using the given current directory path and FileSystemView.
setup
protected void setup(FileSystemView view)
-
Performs common constructor initialization and setup.
-
-
setDragEnabled
public void setDragEnabled(boolean b)
-
Sets the dragEnabled property, which must be true to enable automatic drag handling (the first part of drag and drop) on this component. The transferHandler property needs to be set to a non-null value for the drag to do anything. The default value of the dragEnabled property is false.
When automatic drag handling is enabled, most look and feels begin a drag-and-drop operation whenever the user presses the mouse button over a selection and then moves the mouse a few pixels. Setting this property to true can therefore have a subtle effect on how selections behave.
Some look and feels might not support automatic drag and drop; they will ignore this property. You can work around such look and feels by modifying the component to directly call the exportAsDrag method of a TransferHandler.
-
-
-
Parameters:
-
b - the value to set the dragEnabled property to
-
Throws:
-
HeadlessException
- if b is true and GraphicsEnvironment.isHeadless() returns true
-
Since:
-
1.4
-
See Also:
-
GraphicsEnvironment.isHeadless()
,
getDragEnabled()
,
JComponent.setTransferHandler(javax.swing.TransferHandler)
,
TransferHandler
getDragEnabled
public boolean getDragEnabled()
-
Gets the value of the dragEnabled property.
-
-
-
Returns:
-
the value of the dragEnabled property
-
Since:
-
1.4
-
See Also:
-
setDragEnabled(boolean)
getSelectedFile
public File getSelectedFile()
-
Returns the selected file. This can be set either by the programmer via setFile or by a user action, such as either typing the filename into the UI or selecting the file from a list in the UI.
-
-
-
Returns:
-
the selected file
-
See Also:
-
setSelectedFile(java.io.File)
setSelectedFile
public void setSelectedFile(File file)
-
Sets the selected file. If the file's parent directory is not the current directory, changes the current directory to be the file's parent directory.
-
-
-
Parameters:
-
file - the selected file
-
See Also:
-
getSelectedFile()
getSelectedFiles
public File[] getSelectedFiles()
-
Returns a list of selected files if the file chooser is set to allow multiple selection.
-
-
setSelectedFiles
public void setSelectedFiles(File[] selectedFiles)
-
Sets the list of selected files if the file chooser is set to allow multiple selection.
-
-
getCurrentDirectory
public File getCurrentDirectory()
-
Returns the current directory.
-
-
-
Returns:
-
the current directory
-
See Also:
-
setCurrentDirectory(java.io.File)
setCurrentDirectory
public void setCurrentDirectory(File dir)
-
Sets the current directory. Passing in null sets the file chooser to point to the user's default directory. This default depends on the operating system. It is typically the "My Documents" folder on Windows, and the user's home directory on Unix. If the file passed in as currentDirectory is not a directory, the parent of the file will be used as the currentDirectory. If the parent is not traversable, then it will walk up the parent tree until it finds a traversable directory, or hits the root of the file system.
-
-
-
Parameters:
-
dir - the current directory to point to
-
See Also:
-
getCurrentDirectory()
changeToParentDirectory
public void changeToParentDirectory()
-
Changes the directory to be set to the parent of the current directory.
-
-
-
See Also:
-
getCurrentDirectory()
rescanCurrentDirectory
public void rescanCurrentDirectory()
-
Tells the UI to rescan its files list from the current directory.
-
-
ensureFileIsVisible
public void ensureFileIsVisible(File f)
-
Makes sure that the specified file is viewable, and not hidden.
-
-
-
Parameters:
-
f - a File object
showOpenDialog
public int showOpenDialog(Component parent)
throws HeadlessException
-
Pops up an "Open File" file chooser dialog. Note that the text that appears in the approve button is determined by the L&F.
-
-
-
Parameters:
-
parent - the parent component of the dialog, can be null; see showDialog for details
-
Returns:
-
the return state of the file chooser on popdown:
-
JFileChooser.CANCEL_OPTION
-
JFileChooser.APPROVE_OPTION
-
JFileCHooser.ERROR_OPTION if an error occurs or the dialog is dismissed
-
Throws:
-
HeadlessException
- if GraphicsEnvironment.isHeadless() returns true.
-
See Also:
-
GraphicsEnvironment.isHeadless()
,
showDialog(java.awt.Component, java.lang.String)
showSaveDialog
public int showSaveDialog(Component parent)
throws HeadlessException
-
Pops up a "Save File" file chooser dialog. Note that the text that appears in the approve button is determined by the L&F.
-
-
-
Parameters:
-
parent - the parent component of the dialog, can be null; see showDialog for details
-
Returns:
-
the return state of the file chooser on popdown:
-
JFileChooser.CANCEL_OPTION
-
JFileChooser.APPROVE_OPTION
-
JFileCHooser.ERROR_OPTION if an error occurs or the dialog is dismissed
-
Throws:
-
HeadlessException
- if GraphicsEnvironment.isHeadless() returns true.
-
See Also:
-
GraphicsEnvironment.isHeadless()
,
showDialog(java.awt.Component, java.lang.String)
showDialog
public int showDialog(Component parent,
String approveButtonText)
throws HeadlessException
-
Pops a custom file chooser dialog with a custom approve button. For example, the following code pops up a file chooser with a "Run Application" button (instead of the normal "Save" or "Open" button):
filechooser.showDialog(parentFrame, "Run Application");
Alternatively, the following code does the same thing:
JFileChooser chooser = new JFileChooser(null);
chooser.setApproveButtonText("Run Application");
chooser.showDialog(parentFrame, null);
The parent argument determines two things: the frame on which the open dialog depends and the component whose position the look and feel should consider when placing the dialog. If the parent is a Frame object (such as a JFrame) then the dialog depends on the frame and the look and feel positions the dialog relative to the frame (for example, centered over the frame). If the parent is a component, then the dialog depends on the frame containing the component, and is positioned relative to the component (for example, centered over the component). If the parent is null, then the dialog depends on no visible window, and it's placed in a look-and-feel-dependent position such as the center of the screen.
-
-
-
Parameters:
-
parent - the parent component of the dialog; can be null
-
approveButtonText - the text of the ApproveButton
-
Returns:
-
the return state of the file chooser on popdown:
-
JFileChooser.CANCEL_OPTION
-
JFileChooser.APPROVE_OPTION
-
JFileCHooser.ERROR_OPTION if an error occurs or the dialog is dismissed
-
Throws:
-
HeadlessException
- if GraphicsEnvironment.isHeadless() returns true.
-
See Also:
-
GraphicsEnvironment.isHeadless()
createDialog
protected JDialog createDialog(Component parent)
throws HeadlessException
-
Creates and returns a new JDialog wrapping this centered on the parent in the parent's frame. This method can be overriden to further manipulate the dialog, to disable resizing, set the location, etc. Example:
class MyFileChooser extends JFileChooser {
protected JDialog createDialog(Component parent) throws HeadlessException {
JDialog dialog = super.createDialog(parent);
dialog.setLocation(300, 200);
dialog.setResizable(false);
return dialog;
}
}
-
-
-
Parameters:
-
parent - the parent component of the dialog; can be null
-
Returns:
-
a new JDialog containing this instance
-
Throws:
-
HeadlessException
- if GraphicsEnvironment.isHeadless() returns true.
-
Since:
-
1.4
-
See Also:
-
GraphicsEnvironment.isHeadless()
getControlButtonsAreShown
public boolean getControlButtonsAreShown()
-
Returns the value of the controlButtonsAreShown property.
-
-
-
Returns:
-
the value of the controlButtonsAreShown property
-
Since:
-
1.3
-
See Also:
-
setControlButtonsAreShown(boolean)
setControlButtonsAreShown
public void setControlButtonsAreShown(boolean b)
-
Sets the property that indicates whether the
approve
and
cancel
buttons are shown in the file chooser. This property is true by default. Look and feels that always show these buttons will ignore the value of this property. This method fires a property-changed event, using the string value of CONTROL_BUTTONS_ARE_SHOWN_CHANGED_PROPERTY as the name of the property.
-
-
-
Parameters:
-
b - false if control buttons should not be shown; otherwise, true
-
Since:
-
1.3
-
See Also:
-
getControlButtonsAreShown()
,
CONTROL_BUTTONS_ARE_SHOWN_CHANGED_PROPERTY
getDialogType
public int getDialogType()
-
Returns the type of this dialog. The default is JFileChooser.OPEN_DIALOG.
-
-
-
Returns:
-
the type of dialog to be displayed:
-
JFileChooser.OPEN_DIALOG
-
JFileChooser.SAVE_DIALOG
-
JFileChooser.CUSTOM_DIALOG
-
See Also:
-
setDialogType(int)
setDialogType
public void setDialogType(int dialogType)
-
Sets the type of this dialog. Use OPEN_DIALOG when you want to bring up a file chooser that the user can use to open a file. Likewise, use SAVE_DIALOG for letting the user choose a file for saving. Use CUSTOM_DIALOG when you want to use the file chooser in a context other than "Open" or "Save". For instance, you might want to bring up a file chooser that allows the user to choose a file to execute. Note that you normally would not need to set the JFileChooser to use CUSTOM_DIALOG since a call to setApproveButtonText does this for you. The default dialog type is JFileChooser.OPEN_DIALOG.
-
-
-
Parameters:
-
dialogType - the type of dialog to be displayed:
-
JFileChooser.OPEN_DIALOG
-
JFileChooser.SAVE_DIALOG
-
JFileChooser.CUSTOM_DIALOG
-
Throws:
-
IllegalArgumentException
- if dialogType is not legal
-
See Also:
-
getDialogType()
,
setApproveButtonText(java.lang.String)
setDialogTitle
public void setDialogTitle(String dialogTitle)
-
Sets the string that goes in the JFileChooser window's title bar.
-
-
-
Parameters:
-
dialogTitle - the new String for the title bar
-
See Also:
-
getDialogTitle()
getDialogTitle
public String getDialogTitle()
-
Gets the string that goes in the JFileChooser's titlebar.
-
-
-
See Also:
-
setDialogTitle(java.lang.String)
setApproveButtonToolTipText
public void setApproveButtonToolTipText(String toolTipText)
-
Sets the tooltip text used in the ApproveButton. If null, the UI object will determine the button's text.
-
-
-
See Also:
-
setApproveButtonText(java.lang.String)
,
setDialogType(int)
,
showDialog(java.awt.Component, java.lang.String)
getApproveButtonToolTipText
public String getApproveButtonToolTipText()
-
Returns the tooltip text used in the ApproveButton. If null, the UI object will determine the button's text.
-
-
-
Returns:
-
the text used in the ApproveButton
-
See Also:
-
setApproveButtonText(java.lang.String)
,
setDialogType(int)
,
showDialog(java.awt.Component, java.lang.String)
getApproveButtonMnemonic
public int getApproveButtonMnemonic()
-
Returns the approve button's mnemonic.
-
-
-
Returns:
-
an integer value for the mnemonic key
-
See Also:
-
setApproveButtonMnemonic(int)
setApproveButtonMnemonic
public void setApproveButtonMnemonic(int mnemonic)
-
Sets the approve button's mnemonic using a numeric keycode.
-
-
-
Parameters:
-
mnemonic - an integer value for the mnemonic key
-
See Also:
-
getApproveButtonMnemonic()
setApproveButtonMnemonic
public void setApproveButtonMnemonic(char mnemonic)
-
Sets the approve button's mnemonic using a character.
-
-
-
Parameters:
-
mnemonic - a character value for the mnemonic key
-
See Also:
-
getApproveButtonMnemonic()
setApproveButtonText
public void setApproveButtonText(String approveButtonText)
-
Sets the text used in the ApproveButton in the FileChooserUI.
-
-
-
Parameters:
-
approveButtonText - the text used in the ApproveButton
-
See Also:
-
getApproveButtonText()
,
setDialogType(int)
,
showDialog(java.awt.Component, java.lang.String)
getApproveButtonText
public String getApproveButtonText()
-
Returns the text used in the ApproveButton in the FileChooserUI. If null, the UI object will determine the button's text. Typically, this would be "Open" or "Save".
-
-
-
Returns:
-
the text used in the ApproveButton
-
See Also:
-
setApproveButtonText(java.lang.String)
,
setDialogType(int)
,
showDialog(java.awt.Component, java.lang.String)
getChoosableFileFilters
public FileFilter[] getChoosableFileFilters()
-
Gets the list of user choosable file filters.
-
-
-
Returns:
-
a FileFilter array containing all the choosable file filters
-
See Also:
-
addChoosableFileFilter(javax.swing.filechooser.FileFilter)
,
removeChoosableFileFilter(javax.swing.filechooser.FileFilter)
,
resetChoosableFileFilters()
addChoosableFileFilter
public void addChoosableFileFilter(FileFilter filter)
-
Adds a filter to the list of user choosable file filters.
For information on setting the file selection mode, see
setFileSelectionMode
.
-
-
-
Parameters:
-
filter - the FileFilter to add to the choosable file filter list
-
See Also:
-
getChoosableFileFilters()
,
removeChoosableFileFilter(javax.swing.filechooser.FileFilter)
,
resetChoosableFileFilters()
,
setFileSelectionMode(int)
removeChoosableFileFilter
public boolean removeChoosableFileFilter(FileFilter f)
-
Removes a filter from the list of user choosable file filters. Returns true if the file filter was removed.
-
-
-
See Also:
-
addChoosableFileFilter(javax.swing.filechooser.FileFilter)
,
getChoosableFileFilters()
,
resetChoosableFileFilters()
resetChoosableFileFilters
public void resetChoosableFileFilters()
-
Resets the choosable file filter list to its starting state. Normally, this removes all added file filters while leaving the AcceptAll file filter.
-
-
-
See Also:
-
addChoosableFileFilter(javax.swing.filechooser.FileFilter)
,
getChoosableFileFilters()
,
removeChoosableFileFilter(javax.swing.filechooser.FileFilter)
getAcceptAllFileFilter
public FileFilter getAcceptAllFileFilter()
-
Returns the AcceptAll file filter. For example, on Microsoft Windows this would be All Files (*.*).
-
-
isAcceptAllFileFilterUsed
public boolean isAcceptAllFileFilterUsed()
-
Returns whether the AcceptAll FileFilter is used.
-
-
-
Returns:
-
true if the AcceptAll FileFilter is used
-
Since:
-
1.3
-
See Also:
-
setAcceptAllFileFilterUsed(boolean)
setAcceptAllFileFilterUsed
public void setAcceptAllFileFilterUsed(boolean b)
-
Determines whether the AcceptAll FileFilter is used as an available choice in the choosable filter list. If false, the AcceptAll file filter is removed from the list of available file filters. If true, the AcceptAll file filter will become the the actively used file filter.
-
-
-
Since:
-
1.3
-
See Also:
-
isAcceptAllFileFilterUsed()
,
getAcceptAllFileFilter()
,
setFileFilter(javax.swing.filechooser.FileFilter)
getAccessory
public JComponent getAccessory()
-
Returns the accessory component.
-
-
-
Returns:
-
this JFileChooser's accessory component, or null
-
See Also:
-
setAccessory(javax.swing.JComponent)
setAccessory
public void setAccessory(JComponent newAccessory)
-
Sets the accessory component. An accessory is often used to show a preview image of the selected file; however, it can be used for anything that the programmer wishes, such as extra custom file chooser controls.
Note: if there was a previous accessory, you should unregister any listeners that the accessory might have registered with the file chooser.
-
-
setFileSelectionMode
public void setFileSelectionMode(int mode)
-
Sets the JFileChooser to allow the user to just select files, just select directories, or select both files and directories. The default is JFilesChooser.FILES_ONLY.
-
-
-
Parameters:
-
mode - the type of files to be displayed:
-
JFileChooser.FILES_ONLY
-
JFileChooser.DIRECTORIES_ONLY
-
JFileChooser.FILES_AND_DIRECTORIES
-
Throws:
-
IllegalArgumentException
- if mode is an illegal
file selection
Dialog
mode -
See Also:
-
getFileSelectionMode()
getFileSelectionMode
public int getFileSelectionMode()
-
Returns the current file-selection mode. The default is JFilesChooser.FILES_ONLY.
-
-
-
Returns:
-
the type of files to be displayed, one of the following:
-
JFileChooser.FILES_ONLY
-
JFileChooser.DIRECTORIES_ONLY
-
JFileChooser.FILES_AND_DIRECTORIES
-
See Also:
-
setFileSelectionMode(int)
isFileSelectionEnabled
public boolean isFileSelectionEnabled()
-
Convenience call that determines if files are selectable based on the current file selection mode.
-
-
-
See Also:
-
setFileSelectionMode(int)
,
getFileSelectionMode()
isDirectorySelectionEnabled
public boolean isDirectorySelectionEnabled()
-
Convenience call that determines if directories are selectable based on the current file selection mode.
-
-
-
See Also:
-
setFileSelectionMode(int)
,
getFileSelectionMode()
setMultiSelectionEnabled
public void setMultiSelectionEnabled(boolean b)
-
Sets the file chooser to allow multiple file selections.
-
-
-
Parameters:
-
b - true if multiple files may be selected
-
See Also:
-
isMultiSelectionEnabled()
isMultiSelectionEnabled
public boolean isMultiSelectionEnabled()
-
Returns true if multiple files can be selected.
-
-
-
Returns:
-
true if multiple files can be selected
-
See Also:
-
setMultiSelectionEnabled(boolean)
isFileHidingEnabled
public boolean isFileHidingEnabled()
-
Returns true if hidden files are not shown in the file chooser; otherwise, returns false.
-
-
-
Returns:
-
the status of the file hiding property
-
See Also:
-
setFileHidingEnabled(boolean)
setFileHidingEnabled
public void setFileHidingEnabled(boolean b)
-
Sets file hiding on or off. If true, hidden files are not shown in the file chooser. The job of determining which files are shown is done by the FileView.
-
-
-
Parameters:
-
b - the boolean value that determines whether file hiding is turned on
-
See Also:
-
isFileHidingEnabled()
setFileFilter
public void setFileFilter(FileFilter filter)
-
Sets the current file filter. The file filter is used by the file chooser to filter out files from the user's view.
-
-
-
Parameters:
-
filter - the new current file filter to use
-
See Also:
-
getFileFilter()
getFileFilter
public FileFilter getFileFilter()
-
Returns the currently selected file filter.
-
-
-
Returns:
-
the current file filter
-
See Also:
-
setFileFilter(javax.swing.filechooser.FileFilter)
,
addChoosableFileFilter(javax.swing.filechooser.FileFilter)
setFileView
public void setFileView(FileView fileView)
-
Sets the file view to used to retrieve UI information, such as the icon that represents a file or the type description of a file.
-
-
-
See Also:
-
getFileView()
getFileView
public FileView getFileView()
-
Returns the current file view.
-
-
-
See Also:
-
setFileView(javax.swing.filechooser.FileView)
getName
public String getName(File f)
-
Returns the filename.
-
-
-
Parameters:
-
f - the File
-
Returns:
-
the String containing the filename for f
-
See Also:
-
FileView.getName(java.io.File)
getDescription
public String getDescription(File f)
-
Returns the file description.
-
-
-
Parameters:
-
f - the File
-
Returns:
-
the String containing the file description for f
-
See Also:
-
FileView.getDescription(java.io.File)
getTypeDescription
public String getTypeDescription(File f)
-
Returns the file type.
-
-
-
Parameters:
-
f - the File
-
Returns:
-
the String containing the file type description for f
-
See Also:
-
FileView.getTypeDescription(java.io.File)
getIcon
public Icon getIcon(File f)
-
Returns the icon for this file or type of file, depending on the system.
-
-
-
Parameters:
-
f - the File
-
Returns:
-
the Icon for this file, or type of file
-
See Also:
-
FileView.getIcon(java.io.File)
isTraversable
public boolean isTraversable(File f)
-
Returns true if the file (directory) can be visited. Returns false if the directory cannot be traversed.
-
-
-
Parameters:
-
f - the File
-
Returns:
-
true if the file/directory can be traversed, otherwise false
-
See Also:
-
FileView.isTraversable(java.io.File)
accept
public boolean accept(File f)
-
Returns true if the file should be displayed.
-
-
-
Parameters:
-
f - the File
-
Returns:
-
true if the file should be displayed, otherwise false
-
See Also:
-
FileFilter.accept(java.io.File)
setFileSystemView
public void setFileSystemView(FileSystemView fsv)
-
Sets the file system view that the JFileChooser uses for accessing and creating file system resources, such as finding the floppy drive and getting a list of root drives.
-
-
-
Parameters:
-
fsv - the new FileSystemView
-
See Also:
-
FileSystemView
getFileSystemView
public FileSystemView getFileSystemView()
-
Returns the file system view.
-
-
-
Returns:
-
the FileSystemView object
-
See Also:
-
setFileSystemView(javax.swing.filechooser.FileSystemView)
approveSelection
public void approveSelection()
-
Called by the UI when the user hits the Approve button (labeled "Open" or "Save", by default). This can also be called by the programmer. This method causes an action event to fire with the command string equal to APPROVE_SELECTION.
-
-
-
See Also:
-
APPROVE_SELECTION
cancelSelection
public void cancelSelection()
-
Called by the UI when the user chooses the Cancel button. This can also be called by the programmer. This method causes an action event to fire with the command string equal to CANCEL_SELECTION.
-
-
-
See Also:
-
CANCEL_SELECTION
addActionListener
public void addActionListener(ActionListener l)
-
Adds an ActionListener to the file chooser.
-
-
-
Parameters:
-
l - the listener to be added
-
See Also:
-
approveSelection()
,
cancelSelection()
removeActionListener
public void removeActionListener(ActionListener l)
-
Removes an ActionListener from the file chooser.
-
-
-
Parameters:
-
l - the listener to be removed
-
See Also:
-
addActionListener(java.awt.event.ActionListener)
getActionListeners
public ActionListener[] getActionListeners()
-
Returns an array of all the action listeners registered on this file chooser.
-
-
-
Returns:
-
all of this file chooser's ActionListeners or an empty array if no action listeners are currently registered
-
Since:
-
1.4
-
See Also:
-
addActionListener(java.awt.event.ActionListener)
,
removeActionListener(java.awt.event.ActionListener)
fireActionPerformed
protected void fireActionPerformed(String command)
-
Notifies all listeners that have registered interest for notification on this event type. The event instance is lazily created using the command parameter.
-
-
-
See Also:
-
EventListenerList
updateUI
public void updateUI()
-
Resets the UI property to a value from the current look and feel.
-
-
Overrides:
-
updateUI
in class
JComponent
-
-
See Also:
-
JComponent.updateUI()
getUIClassID
public String getUIClassID()
-
Returns a string that specifies the name of the L&F class that renders this component.
-
-
Overrides:
-
getUIClassID
in class
JComponent
-
-
Returns:
-
the string "FileChooserUI"
-
See Also:
-
JComponent.getUIClassID()
,
UIDefaults.getUI(javax.swing.JComponent)
getUI
public FileChooserUI getUI()
-
Gets the UI object which implements the L&F for this component.
-
-
-
Returns:
-
the FileChooserUI object that implements the FileChooserUI L&F
paramString
protected String paramString()
-
Returns a string representation of this JFileChooser. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not be null.
-
-
Overrides:
-
paramString
in class
JComponent
-
-
Returns:
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a string representation of this JFileChooser
getAccessibleContext
public AccessibleContext getAccessibleContext()
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Gets the AccessibleContext associated with this JFileChooser. For file choosers, the AccessibleContext takes the form of an AccessibleJFileChooser. A new AccessibleJFileChooser instance is created if necessary.
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Specified by:
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getAccessibleContext
in interface
Accessible
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Overrides:
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getAccessibleContext
in class
JComponent
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Returns:
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an AccessibleJFileChooser that serves as the AccessibleContext of this JFileChooser