This method of the UserFileDialog Class displays a dialog box that allows the user to open a file for random access. If the user selects a file, then a FileInputStream object for that file is returned. If the user cancels the dialog box, null is returned. To determine the name of the file that was opened, you can use the getFileName method.
public synchronized RandomAccessFile openRandomAccessFile( String mode) throws IOException;
Returns a RandomAccessFile object if the user selects a file or returns null if the user cancels the dialog box.
mode | The mode to open the file in. If mode is "r", the file is opened in read-only mode. If mode is "rw", the file is opened in read-write mode. |
IllegalArgumentException if the mode argument is not equal to "r" or to "rw".
SecurityException if the caller does not have permission to initiate user-directed file I/O.
IOException if an I/O error occurs while attempting to open the file.