Log4j Version 1.2.7: Package org.apache.log4j.performance

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## Package org.apache.log4j.performance

Package to measure the performance of the different log4j components.

See:
Description

Class Summary
ConcatVsArray | Measure difference in performance of string concatenation versus creating an anonymous string array.
ListVsVector | Compares the performance of looping through a list versus a Vector.
Logging | Measure the performance of logging.
NewVsSetLen | This program compares the cost of creating a new StringBuffer and converting it to a String versus keeping the same StringBuffer, setting its size to zero and then converting it to String.
NOPWriter | Extends `Writer` with methods that return immediately without doing anything.
NotLogging | Measure the performance of evaluating whether to log or not to log, but not actually logging.
NullAppender | A bogus appender which calls the format method of its layout object but does not write the result anywhere.
SystemTime | Measures the time required to make a System.currentTimeMillis() and Thread.currentThread().getName() calls.

## Package org.apache.log4j.performance Description

Package to measure the performance of the different log4j components.

The `org.apache.log4j.performance` package is intended for internal use only. Consequently, the classes in this package are not included in the log4j.jar file.

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