Log Level « Log « Java Tutorial

35.2.Log Level
35.2.1.Use different logging level
35.2.2.Setting the Log Level of a Logger
35.2.3.Getting the Log Level of a Logger
35.2.4.Creating a Custom Log Level
35.2.5.Log finest, finer, config, warning ans severe
35.2.6.Determining If a Message Will Be Logged
35.2.7.Comparing Log Levels: To compare the severity of two logging levels, use Level.intValue().