Interface Log
- All Known Implementing Classes:
- AvalonLogger,- Jdk13LumberjackLogger,- Jdk14Logger,- Log4JLogger,- LogKitLogger,- NoOpLog,- SimpleLog
LogFactory, classes that implement
 this interface must have a constructor that takes a single String
 parameter representing the "name" of this Log.
 
 The six logging levels used by Log are (in order):
 
- trace (the least serious)
- debug
- info
- warn
- error
- fatal (the most serious)
Performance is often a logging concern. By examining the appropriate property, a component can avoid expensive operations (producing information to be logged).
For example,
    if (log.isDebugEnabled()) {
        ... do something expensive ...
        log.debug(theResult);
    }
 
 Configuration of the underlying logging system will generally be done external to the Logging APIs, through whatever mechanism is supported by that system.
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Method SummaryModifier and TypeMethodDescriptionvoidLogs a message with debug log level.voidLogs an error with debug log level.voidLogs a message with error log level.voidLogs an error with error log level.voidLogs a message with fatal log level.voidLogs an error with fatal log level.voidLogs a message with info log level.voidLogs an error with info log level.booleanIs debug logging currently enabled?booleanIs error logging currently enabled?booleanIs fatal logging currently enabled?booleanIs info logging currently enabled?booleanIs trace logging currently enabled?booleanIs warn logging currently enabled?voidLogs a message with trace log level.voidLogs an error with trace log level.voidLogs a message with warn log level.voidLogs an error with warn log level.
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Method Details- 
debugLogs a message with debug log level.- Parameters:
- message- log this message
 
- 
debugLogs an error with debug log level.- Parameters:
- message- log this message
- t- log this cause
 
- 
errorLogs a message with error log level.- Parameters:
- message- log this message
 
- 
errorLogs an error with error log level.- Parameters:
- message- log this message
- t- log this cause
 
- 
fatalLogs a message with fatal log level.- Parameters:
- message- log this message
 
- 
fatalLogs an error with fatal log level.- Parameters:
- message- log this message
- t- log this cause
 
- 
infoLogs a message with info log level.- Parameters:
- message- log this message
 
- 
infoLogs an error with info log level.- Parameters:
- message- log this message
- t- log this cause
 
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isDebugEnabledboolean isDebugEnabled()Is debug logging currently enabled?Call this method to prevent having to perform expensive operations (for example, Stringconcatenation) when the log level is more than debug.- Returns:
- true if debug is enabled in the underlying logger.
 
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isErrorEnabledboolean isErrorEnabled()Is error logging currently enabled?Call this method to prevent having to perform expensive operations (for example, Stringconcatenation) when the log level is more than error.- Returns:
- true if error is enabled in the underlying logger.
 
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isFatalEnabledboolean isFatalEnabled()Is fatal logging currently enabled?Call this method to prevent having to perform expensive operations (for example, Stringconcatenation) when the log level is more than fatal.- Returns:
- true if fatal is enabled in the underlying logger.
 
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isInfoEnabledboolean isInfoEnabled()Is info logging currently enabled?Call this method to prevent having to perform expensive operations (for example, Stringconcatenation) when the log level is more than info.- Returns:
- true if info is enabled in the underlying logger.
 
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isTraceEnabledboolean isTraceEnabled()Is trace logging currently enabled?Call this method to prevent having to perform expensive operations (for example, Stringconcatenation) when the log level is more than trace.- Returns:
- true if trace is enabled in the underlying logger.
 
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isWarnEnabledboolean isWarnEnabled()Is warn logging currently enabled?Call this method to prevent having to perform expensive operations (for example, Stringconcatenation) when the log level is more than warn.- Returns:
- true if warn is enabled in the underlying logger.
 
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traceLogs a message with trace log level.- Parameters:
- message- log this message
 
- 
traceLogs an error with trace log level.- Parameters:
- message- log this message
- t- log this cause
 
- 
warnLogs a message with warn log level.- Parameters:
- message- log this message
 
- 
warnLogs an error with warn log level.- Parameters:
- message- log this message
- t- log this cause
 
 
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