Chapter 3: Creating and Configuring Servers

Formatter properties

Formatters specify the format of logged messages. You can associate a formatter with a handler to specify the format of messages logged through the handler. Table 3-18 describes the formatter properties.

**Table 3-18: Formatter settings**
Tab name / Setting name	Specifies
General / Description	An optional description.
Type / Message Format	The format pattern for the message text, using the placeholders listed in Table 3-19. You can use the Insert Tag control to insert these placeholders, or type them yourself.
Type / Insert Tag	When editing the message format, use this control to insert the placeholder tags.
Type / Simple Date Format	The format for timestamps in log messages. The pattern for the timestamps embedded in log messages, as converted to strings by java.text.SimpleDateFormat. For details, see the DateFormat API documentation.

Table 3-19 lists the placeholders that you can use when specifying the message format pattern. Each placeholder represents part of the message.

**Table 3-19: Message format placeholders**
Placeholder	Represents
`%LN`	The logging category name
`%MC`	Message code (number)
`%ML`	Message level (severity)
`%MT`	Message text
`%SN`	Sequence number
`%SF`	Source file name
`%SL`	Line number in the source file
`%SM`	Method name in the source file
`%TI`	Thread ID
`%TH`	Exception thrown (if available)
`%TS`	The timestamp, formatted as specified by the Simple Date Format setting
`%NL`	A line break

Using log profiles in Java client applications

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