```
public interface Logger
```
Provides simple logging with echo(String)-style methods outputting both to console and to jrebel.log and log(String)-style methods outputting only to log. To use it acquire an instance from LoggerFactory

Since:

1.2

Author:

Jevgeni Kabanov (ekabanov@zeroturnaround.com), Aleksei Sosnovski

See Also:

LoggerFactory, Integration, Configuration, Reloader, Plugin

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`StopWatch`	`createStopWatch(String category)`	Returns a StopWatch used to log time taken by something.
`void`	`debug(String message)`	Writes message to jrebel.log if enabled.
`void`	`debug(String format, Object arg)`	Writes formatted message to jrebel.log if enabled.
`void`	`debug(String format, Object... args)`	Writes formatted message to jrebel.log if enabled.
`void`	`debug(String format, Object arg1, Object arg2)`	Writes formatted message to jrebel.log if enabled.
`void`	`debug(String message, Throwable e)`	Dumps message and stacktrace to jrebel.log if enabled.
`void`	`echo()`	Adds a newline to jrebel.log if enabled and prints it to console if console output is enabled.
`void`	`echo(String message)`	Logs a message to jrebel.log if enabled and prints it to console if console output is enabled.
`void`	`echoPrefix(String message)`	Logs a message to jrebel.log if enabled and prints it to console if console output is enabled including the product name (JRebel) as prefix.
`void`	`error(String message)`	Writes message to jrebel.log if enabled.
`void`	`error(String format, Object arg)`	Writes formatted message to jrebel.log if enabled.
`void`	`error(String format, Object... args)`	Writes formatted message to jrebel.log if enabled.
`void`	`error(String format, Object arg1, Object arg2)`	Writes formatted message to jrebel.log if enabled.
`void`	`error(String message, Throwable e)`	Dumps message and stacktrace to jrebel.log if enabled.
`void`	`error(Throwable e)`	Dumps stacktrace to jrebel.log if enabled.
`void`	`errorEcho(String message)`	Writes message to jrebel.log if enabled and prints it to console if console output is enabled.
`void`	`errorEcho(String message, Object... args)`
`void`	`errorEcho(String message, Throwable e)`	Dumps message and stacktrace to jrebel.log if enabled and prints it to console if console output is enabled.
`void`	`errorEcho(Throwable e)`	Dumps stacktrace to jrebel.log if enabled and prints it to console if console output is enabled.
`void`	`errorTrace(Throwable e)`	Dumps stacktrace to jrebel.log if trace is enabled.
`void`	`info(String message)`	Writes message to jrebel.log if enabled.
`void`	`info(String format, Object arg)`	Writes formatted message to jrebel.log if enabled.
`void`	`info(String format, Object... args)`	Writes formatted message to jrebel.log if enabled.
`void`	`info(String format, Object arg1, Object arg2)`	Writes formatted message to jrebel.log if enabled.
`void`	`info(String message, Throwable e)`	Dumps message and stacktrace to jrebel.log if enabled.
`void`	`infoEcho(String message)`	Writes message to jrebel.log if enabled and prints it to console if console output is enabled.
`void`	`infoEcho(String message, Object... args)`
`void`	`infoEcho(String message, Throwable e)`	Dumps message and stacktrace to jrebel.log if enabled and prints it to console if console output is enabled.
`boolean`	`isDebugEnabled()`
`boolean`	`isEnabled()`	Returns `true` if logging to jrebel.log is enabled.
`boolean`	`isErrorEnabled()`
`boolean`	`isInfoEnabled()`
`boolean`	`isTraceEnabled()`
`boolean`	`isWarnEnabled()`
`void`	`log(String message)`	Logs a message to jrebel.log if enabled.
`Logger`	`prefix(String prefix)`	Returns a Logger instance including the given prefix in each message.
`Logger`	`productPrefix(String prefix)`	Returns a Logger instance including the product name plus the given prefix in each message.
`void`	`trace(String message)`	Logs a message to jrebel.log if trace is enabled.
`void`	`trace(String format, Object arg)`	Writes formatted message to jrebel.log if enabled.
`void`	`trace(String format, Object... args)`	Writes formatted message to jrebel.log if enabled.
`void`	`trace(String format, Object arg1, Object arg2)`	Writes formatted message to jrebel.log if enabled.
`void`	`trace(String message, Throwable e)`	Dumps message and stacktrace to jrebel.log if enabled.
`void`	`warn(String message)`	Writes message to jrebel.log if enabled.
`void`	`warn(String format, Object arg)`	Writes formatted message to jrebel.log if enabled.
`void`	`warn(String format, Object... args)`	Writes formatted message to jrebel.log if enabled.
`void`	`warn(String format, Object arg1, Object arg2)`	Writes formatted message to jrebel.log if enabled.
`void`	`warn(String message, Throwable e)`	Dumps message and stacktrace to jrebel.log if enabled.
`void`	`warnEcho(String message)`	Writes message to jrebel.log if enabled and prints it to console if console output is enabled.
`void`	`warnEcho(String message, Object... args)`
`void`	`warnEcho(String message, Throwable e)`	Dumps message and stacktrace to jrebel.log if enabled and prints it to console if console output is enabled.

- Method Detail
  - error
```
void error(String message)
```
    Writes message to jrebel.log if enabled.
  - error
```
void error(String format,
           Object arg)
```
    Writes formatted message to jrebel.log if enabled. Uses same format as slf4j.
  - error
```
void error(String format,
           Object arg1,
           Object arg2)
```
    Writes formatted message to jrebel.log if enabled. Uses same format as slf4j.
  - error
```
void error(String format,
           Object... args)
```
    Writes formatted message to jrebel.log if enabled. Uses same format as slf4j.
  - error
```
void error(String message,
           Throwable e)
```
    Dumps message and stacktrace to jrebel.log if enabled.
  - warn
```
void warn(String message)
```
    Writes message to jrebel.log if enabled.
  - warn
```
void warn(String format,
          Object arg)
```
    Writes formatted message to jrebel.log if enabled. Uses same format as slf4j.
  - warn
```
void warn(String format,
          Object arg1,
          Object arg2)
```
    Writes formatted message to jrebel.log if enabled. Uses same format as slf4j.
  - warn
```
void warn(String format,
          Object... args)
```
    Writes formatted message to jrebel.log if enabled. Uses same format as slf4j.
  - warn
```
void warn(String message,
          Throwable e)
```
    Dumps message and stacktrace to jrebel.log if enabled.
  - info
```
void info(String message)
```
    Writes message to jrebel.log if enabled.
  - info
```
void info(String format,
          Object arg)
```
    Writes formatted message to jrebel.log if enabled. Uses same format as slf4j.
  - info
```
void info(String format,
          Object arg1,
          Object arg2)
```
    Writes formatted message to jrebel.log if enabled. Uses same format as slf4j.
  - info
```
void info(String format,
          Object... args)
```
    Writes formatted message to jrebel.log if enabled. Uses same format as slf4j.
  - info
```
void info(String message,
          Throwable e)
```
    Dumps message and stacktrace to jrebel.log if enabled.
  - debug
```
void debug(String message)
```
    Writes message to jrebel.log if enabled.
  - debug
```
void debug(String format,
           Object arg)
```
    Writes formatted message to jrebel.log if enabled. Uses same format as slf4j.
  - debug
```
void debug(String format,
           Object arg1,
           Object arg2)
```
    Writes formatted message to jrebel.log if enabled. Uses same format as slf4j.
  - debug
```
void debug(String format,
           Object... args)
```
    Writes formatted message to jrebel.log if enabled. Uses same format as slf4j.
  - debug
```
void debug(String message,
           Throwable e)
```
    Dumps message and stacktrace to jrebel.log if enabled.
  - trace
```
void trace(String message)
```
    Logs a message to jrebel.log if trace is enabled.
  - trace
```
void trace(String format,
           Object arg)
```
    Writes formatted message to jrebel.log if enabled. Uses same format as slf4j.
  - trace
```
void trace(String format,
           Object arg1,
           Object arg2)
```
    Writes formatted message to jrebel.log if enabled. Uses same format as slf4j.
  - trace
```
void trace(String format,
           Object... args)
```
    Writes formatted message to jrebel.log if enabled. Uses same format as slf4j.
  - trace
```
void trace(String message,
           Throwable e)
```
    Dumps message and stacktrace to jrebel.log if enabled.
  - isErrorEnabled
```
boolean isErrorEnabled()
```
    Returns:
    
    true if error logging to jrebel.log is enabled.
  - isWarnEnabled
```
boolean isWarnEnabled()
```
    Returns:
    
    true if warn logging to jrebel.log is enabled.
  - isInfoEnabled
```
boolean isInfoEnabled()
```
    Returns:
    
    true if info logging to jrebel.log is enabled.
  - isDebugEnabled
```
boolean isDebugEnabled()
```
    Returns:
    
    true if debug logging to jrebel.log is enabled.
  - isTraceEnabled
```
boolean isTraceEnabled()
```
    Returns:
    
    true if trace logging to jrebel.log is enabled.
  - errorEcho
```
void errorEcho(String message)
```
    Writes message to jrebel.log if enabled and prints it to console if console output is enabled.
  - errorEcho
```
void errorEcho(String message,
               Object... args)
```
  - errorEcho
```
void errorEcho(String message,
               Throwable e)
```
    Dumps message and stacktrace to jrebel.log if enabled and prints it to console if console output is enabled.
  - warnEcho
```
void warnEcho(String message)
```
    Writes message to jrebel.log if enabled and prints it to console if console output is enabled.
  - warnEcho
```
void warnEcho(String message,
              Object... args)
```
  - warnEcho
```
void warnEcho(String message,
              Throwable e)
```
    Dumps message and stacktrace to jrebel.log if enabled and prints it to console if console output is enabled.
  - infoEcho
```
void infoEcho(String message)
```
    Writes message to jrebel.log if enabled and prints it to console if console output is enabled.
  - infoEcho
```
void infoEcho(String message,
              Object... args)
```
  - infoEcho
```
void infoEcho(String message,
              Throwable e)
```
    Dumps message and stacktrace to jrebel.log if enabled and prints it to console if console output is enabled.
  - createStopWatch
```
StopWatch createStopWatch(String category)
```
    Returns a StopWatch used to log time taken by something.
  - prefix
```
Logger prefix(String prefix)
```
    Returns a Logger instance including the given prefix in each message.
    E.g. logger.prefix("Prefix: ").log("Message") produces Prefix: Message.
  - productPrefix
```
Logger productPrefix(String prefix)
```
    Returns a Logger instance including the product name plus the given prefix in each message.
    E.g. logger.productPrefix("Prefix").log("Message") produces JRebel-Prefix: Message.
  - echo
```
void echo()
```
    Adds a newline to jrebel.log if enabled and prints it to console if console output is enabled.
  - echo
```
void echo(String message)
```
    Logs a message to jrebel.log if enabled and prints it to console if console output is enabled.
  - echoPrefix
```
void echoPrefix(String message)
```
    Logs a message to jrebel.log if enabled and prints it to console if console output is enabled including the product name (JRebel) as prefix.
  - errorEcho
```
void errorEcho(Throwable e)
```
    Dumps stacktrace to jrebel.log if enabled and prints it to console if console output is enabled.
  - error
```
void error(Throwable e)
```
    Dumps stacktrace to jrebel.log if enabled.
  - log
```
void log(String message)
```
    Logs a message to jrebel.log if enabled.
  - errorTrace
```
void errorTrace(Throwable e)
```
    Dumps stacktrace to jrebel.log if trace is enabled.
  - isEnabled
```
boolean isEnabled()
```
    Returns true if logging to jrebel.log is enabled.
    
    Returns:
    
    true if logging to jrebel.log is enabled.

Interface Logger

Method Summary

Method Detail

error

error

error

error

error

warn

warn

warn

warn

warn

info

info

info

info

info

debug

debug

debug

debug

debug

trace

trace

trace

trace

trace

isErrorEnabled

isWarnEnabled

isInfoEnabled

isDebugEnabled

isTraceEnabled

errorEcho

errorEcho

errorEcho

warnEcho

warnEcho

warnEcho

infoEcho

infoEcho

infoEcho

createStopWatch

prefix

productPrefix

echo

echo

echoPrefix

errorEcho

error

log

errorTrace

isEnabled