public LogCursor(LogFile logFile,long lastSeqno){
  this.logFile=logFile;
  this.lastSeqno=lastSeqno;
  this.lastAccessMillis=System.currentTimeMillis();
}

public LogCursor ( LogFile logFile , long lastSeqno ) { this . logFile = logFile ; this . lastSeqno = lastSeqno ; this . lastAccessMillis = System . currentTimeMillis ( ) ; }
create a new log connection .
