Java logging rules

· Morethanonelogger: normally only one logger is used in each class.

Translate more than one logger: Generally, one logger is only used in one class.

· Loggerisnotstaticfinal: In most cases, the logger can be declared static and final.

Logger translation is not static final: In most cases, logger should be defined as static and final

· Systemprintln: system. (Out | ERR). Print is used, consider using a logger.

Systemprintln: If system. (Out | ERR). Print is found in the Code, replace it with a log record.

· Avoidprintstacktrace: Avoid printstacktrace (); Use a logger call instead.

Avoid using printstacktrace for translation: Avoid using printstacktrace (); Use a logger instead.