Setting the Log Level of a Logger
The log level of a logger controls the severity of messages that it
will log. In particular, a log record whose severity is greater than
or equal to the logger's log level is logged.
A log level can be null, in which case the level is inherited
from the logger's parent.
Note: Logger handlers also have a log level. A log record
must first pass the logger's log level before it is compared to the
handler's log level.
// Get a logger
Logger logger = Logger.getLogger("com.mycompany");
// Set the level to a particular level
logger.setLevel(Level.INFO);
// Set the level to that of its parent
logger.setLevel(null);
// Turn off all logging
logger.setLevel(Level.OFF);
// Turn on all logging
logger.setLevel(Level.ALL);
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