protected void createFile() throws FileLockException, IOException {
        openChannel();
        filledUpTo = 0;
        accessFile.setLength(DEFAULT_SIZE);
        size = DEFAULT_SIZE;
        filledUpTo = HEADER_SIZE;
        writeHeader();
    }
protected void createFile ( ) throws FileLockException , IOException { openChannel ( ) ; filledUpTo = 0 ; accessFile . setLength ( DEFAULT_SIZE ) ; size = DEFAULT_SIZE ; filledUpTo = HEADER_SIZE ; writeHeader ( ) ; }
this method will be called to init the database-file