固定大小的日志文件，仅包含最新条目

Question

I have a bug that is guaranteed to happen if the program runs long enough (more than an hour.)

The only way to solve this is to print a massive amount of debugging information, which unfortunately is growing at a rate of 1MB/s!

Though util.Logging.FileHandler has the option to set the size limit of the log files, it simply erases the files and write from scratch once the limit is reached.

Is there a way to write to a log file in a "rolling" manner, such that on exceeding size limit, newest entries displace oldest ones instead of wiping everything out? Currently, I juggle among the log files, but it can get confusing.

Thank you!

Answer 1

Can you use or have you considered using Log4j ??

Search for 'RollingFileAppender' in the manual . Playing with its 'MaxFileSize' and 'MaxBackupIndex' properties should do the trick!