The FileHandler is able to write to a single file, or write to a rotating set of files as each file reaches a specified maximum size. : Log « Log « Java Tutorial

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Java Tutorial » Log » Log

35. 1. 7. The FileHandler is able to write to a single file, or write to a rotating set of files as each file reaches a specified maximum size.

The next number in a sequence is added to the end of the name of each rotating file, unless a generation (sequence) pattern is specified elsewhere.

The properties for the FileHandler are listed in the following table.

Property Name	Description	Default Value
FileHandler.level	Log level for the handler.	Level.INFO
FileHandler.filter	Filter to use.	undefined
FileHandler.formatter	Formatter to use.	java.util.logging.XMLFormatter
FileHandler.encoding	Character set encoding to use.	Default platform encoding
FileHandler.limit	Specifies approximate maximum number of bytes to write to a file. 0 means no limit.	0
FileHandler.count	Specifies how many output files to cycle through.	1
FileHandler.pattern	Pattern used to generate output filenames.	%h/java%u.log
FileHandler.append	Boolean value specifying whether to append to an existing file or overwrite it.	false

35. 1. Log
	35. 1. 1.	A full list of levels.
	35. 1. 2.	Logging a Method Call
	35. 1. 3.	Logging an Exception
	35. 1. 4.	The StreamHandler serves chiefly as a base class for all handlers that write log messages to some OutputStream.
	35. 1. 5.	The ConsoleHandler writes log messages to System.err.
	35. 1. 6.	The SocketHandler writes log messages to the network over a specified TCP port.
	35. 1. 7.	The FileHandler is able to write to a single file, or write to a rotating set of files as each file reaches a specified maximum size.
	35. 1. 8.	The FileHandler class supports filename patterns.
	35. 1. 9.	The MemoryHandler is a circular buffer in memory.
	35. 1. 10.	The ErrorManager
	35. 1. 11.	Information Logging
	35. 1. 12.	Log to a file
	35. 1. 13.	Guaranteeing proper class and method names
	35. 1. 14.	Preventing a Logger from Forwarding Log Records to Its Parent

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