public JournalImpl(File logDirectory, int logFileCount, int logFileSize) throws IOException { this(new LogFileManager(logDirectory, logFileCount, logFileSize, null));
public JournalImpl(File logDirectory) throws IOException { this(new LogFileManager(logDirectory));
    public JournalImpl(File logDirectory, int logFileCount, int logFileSize) throws IOException {        this(new LogFileManager(logDirectory, logFileCount, logFileSize, null));    }