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javax.swing
Class JFileChooser


java.lang.Object
  extended by java.awt.Component
      extended by java.awt.Container
          extended by javax.swing.JComponent
              extended by 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 javax.swing. JComponent
JComponent.AccessibleJComponent
 
Nested classes inherited from class java.awt. Container
Container.AccessibleAWTContainer
 
Nested classes inherited from class java.awt. Component
Component.AccessibleAWTComponent , Component.BltBufferStrategy , Component.FlipBufferStrategy
 
Field Summary
static  String ACCEPT_ALL_FILE_FILTER_USED_CHANGED_PROPERTY
          Identifies whether a the AcceptAllFileFilter is used or not.
protected   AccessibleContext accessibleContext
           
static  String ACCESSORY_CHANGED_PROPERTY
          Says that a different accessory component is in use (for example, to preview files).
static  String APPROVE_BUTTON_MNEMONIC_CHANGED_PROPERTY
          Identifies change in the mnemonic for the approve (yes, ok) button.
static  String APPROVE_BUTTON_TEXT_CHANGED_PROPERTY
          Identifies change in the text on the approve (yes, ok) button.
static  String APPROVE_BUTTON_TOOL_TIP_TEXT_CHANGED_PROPERTY
          Identifies change in the tooltip text for the approve (yes, ok) button.
static int APPROVE_OPTION
          Return value if approve (yes, ok) is chosen.
static  String APPROVE_SELECTION
          Instruction to approve the current selection (same as pressing yes or ok).
static int CANCEL_OPTION
          Return value if cancel is chosen.
static  String CANCEL_SELECTION
          Instruction to cancel the current selection.
static  String CHOOSABLE_FILE_FILTER_CHANGED_PROPERTY
          Identifies a change in the list of predefined file filters the user can choose from.
static  String CONTROL_BUTTONS_ARE_SHOWN_CHANGED_PROPERTY
          Instruction to display the control buttons.
static int CUSTOM_DIALOG
          Type value indicating that the JFileChooser supports a developer-specified file operation.
static  String DIALOG_TITLE_CHANGED_PROPERTY
          Identifies a change in the dialog title.
static  String DIALOG_TYPE_CHANGED_PROPERTY
          Identifies a change in the type of files displayed (files only, directories only, or both files and directories).
static int DIRECTORIES_ONLY
          Instruction to display only directories.
static  String DIRECTORY_CHANGED_PROPERTY
          Identifies user's directory change.
static int ERROR_OPTION
          Return value if an error occured.
static  String FILE_FILTER_CHANGED_PROPERTY
          User changed the kind of files to display.
static  String FILE_HIDING_CHANGED_PROPERTY
          Identifies a change in the display-hidden-files property.
static  String FILE_SELECTION_MODE_CHANGED_PROPERTY
          Identifies a change in the kind of selection (single, multiple, etc.).
static  String FILE_SYSTEM_VIEW_CHANGED_PROPERTY
          Says that a different object is being used to find available drives on the system.
static  String FILE_VIEW_CHANGED_PROPERTY
          Says that a different object is being used to retrieve file information.
static int FILES_AND_DIRECTORIES
          Instruction to display both files and directories.
static int FILES_ONLY
          Instruction to display only files.
static  String MULTI_SELECTION_ENABLED_CHANGED_PROPERTY
          Enables multiple-file selections.
static int OPEN_DIALOG
          Type value indicating that the JFileChooser supports an "Open" file operation.
static int SAVE_DIALOG
          Type value indicating that the JFileChooser supports a "Save" file operation.
static  String SELECTED_FILE_CHANGED_PROPERTY
          Identifies change in user's single-file selection.
static  String SELECTED_FILES_CHANGED_PROPERTY
          Identifies change in user's multiple-file selection.
 
Fields inherited from class javax.swing. JComponent
listenerList , TOOL_TIP_TEXT_KEY , ui , UNDEFINED_CONDITION , WHEN_ANCESTOR_OF_FOCUSED_COMPONENT , WHEN_FOCUSED , WHEN_IN_FOCUSED_WINDOW
 
Fields inherited from class java.awt. Component
BOTTOM_ALIGNMENT , CENTER_ALIGNMENT , LEFT_ALIGNMENT , RIGHT_ALIGNMENT , TOP_ALIGNMENT
 
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
 
Methods inherited from class java.lang. Object
clone , equals , finalize , getClass , hashCode , notify , notifyAll , wait , wait , wait
 

Field Detail

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
Constructor Detail

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.

Method Detail

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:
a string representation of this JFileChooser

getAccessibleContext


public AccessibleContext getAccessibleContext()
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.

Specified by:
getAccessibleContext in interface Accessible
Overrides:
getAccessibleContext in class JComponent
Returns:
an AccessibleJFileChooser that serves as the AccessibleContext of this JFileChooser