The FileDialog spec says the following about the
FileDialog(Frame) and FileDialog(Frame,String,int)
constructors:
public FileDialog(Frame parent)
    Creates a file dialog for loading a file. The title of the file dialog
    is initially empty.
    Parameters:
        parent - the owner of the dialog

public FileDialog(Frame parent,
                  String title,
                  int mode)
    Creates a file dialog window with the specified title for loading
    or saving a file.

    If the value of mode is LOAD, then the file dialog is finding a file
    to read. If the value of mode is SAVE, the file dialog is finding a
    place to write a file.
    Parameters:
        parent - the owner of the dialog.
        title - the title of the dialog.
        mode - the mode of the dialog.
    See Also:
            LOAD, SAVE



The spec does not specify that when the file dialog created by these
constructors is displayed, the files shown are those in the current
directory.