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FileDialog

Name

FileDialog

[Graphic: Figure from the text]

Description

The FileDialog class provides file selection capabilities for opening or saving files. Because FileDialog is a subclass of Dialog, a FileDialog is always associated with a Frame and is hidden by default. FileDialogs are always modal (i.e., they always attract all user input). In addition, FileDialogs have a load/save mode; the LOAD mode is for selecting files for an application to load, SAVE is for selecting a filename to save.

Class Definition

public class java.awt.FileDialog
    extends java.awt.Dialog {
  
  // Constants
  public final static int LOAD;
  public final static int SAVE;
  
  // Constructors
  public FileDialog (Frame parent); (New)
  public FileDialog (Frame parent, String title);
  public FileDialog (Frame parent, String title, int mode);
  
  // Instance Methods
  public void addNotify();
  public String getDirectory();
  public String getFile();
  public FilenameFilter getFilenameFilter();
  public int getMode();
  public synchronized void setDirectory (String directory);
  public synchronized void setFile (String file);
  public synchronized void setFilenameFilter (FilenameFilter filter);
  public void setMode(int mode); (New)
  
  // Protected Instance Methods
  protected String paramString();
}

Constants

LOAD

public final static int LOAD

Constant to specify the FileDialog's load mode.

SAVE

public final static int SAVE

Constant to specify the FileDialog's save mode.

Constructors

FileDialog

public FileDialog (Frame parent) (New)

Parameters

parent

Frame that is to act as parent of FileDialog.

Description

Constructs a FileDialog object in LOAD mode.

public FileDialog (Frame parent, String title)

Parameters

parent

Frame that is to act as parent of FileDialog.

title

Title to use for FileDialog.

Description

Constructs a FileDialog object in LOAD mode.

public FileDialog (Frame parent, String title, int mode)

Parameters

parent

Frame that is to act as parent of Dialog.

title

Title to use for FileDialog.

mode

The constant LOAD or SAVE, specifying the dialog's mode.

Description

Constructs a FileDialog object in the given mode.

Instance Methods

addNotify

public void addNotify()

Overrides

Dialog.addNotify()

Description

Creates FileDialog's peer for the native platform.

getDirectory

public String getDirectory()

Returns

The current directory for the FileDialog.

getFile

public String getFile()

Returns

The current file selected by the FileDialog.

getFilenameFilter

public FilenameFilter getFilenameFilter()

Returns

The current filename filter for the FileDialog.

getMode

public int getMode()

Returns

The current mode of the FileDialog.

setDirectory

public synchronized void setDirectory (String directory)

Parameters

directory

Directory to be displayed by the FileDialog.

Description

Changes the directory displayed in the FileDialog.

setFile

public synchronized void setFile (String file)

Parameters

file

Initial file string for FileDialog.

Description

Change the default file selected by the FileDialog.

setFilenameFilter

public synchronized void setFilenameFilter (FilenameFilter filter)

Parameters

filter

Initial filter for FileDialog.

Description

Changes the current filename filter of the FileDialog.

setMode

public void setMode (int mode) (New)

Parameters

mode

The constant LOAD or SAVE, specifying the dialog's mode.

Description

Change the mode of the file dialog.

Protected Instance Methods

paramString

protected String paramString()

Returns

String with current settings of FileDialog.

Overrides

Dialog.paramString()

Description

Helper method for toString() to generate string of current settings.

See Also

Dialog, FilenameFilter, String


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