public
abstract
class
Formatter
extends Object
| java.lang.Object | |
| ↳ | java.util.logging.Formatter |
 Known Direct Subclasses
|
A Formatter provides support for formatting LogRecords.
Typically each logging Handler will have a Formatter associated with it. The Formatter takes a LogRecord and converts it to a string.
Some formatters (such as the XMLFormatter) need to wrap head and tail strings around a set of formatted records. The getHeader and getTail methods can be used to obtain these strings.
Protected constructors | |
|---|---|
Formatter()
Construct a new formatter. |
|
Public methods | |
|---|---|
abstract
String
|
format(LogRecord record)
Format the given log record and return the formatted string. |
String
|
formatMessage(LogRecord record)
Localize and format the message string from a log record. |
String
|
getHead(Handler h)
Return the header string for a set of formatted records. |
String
|
getTail(Handler h)
Return the tail string for a set of formatted records. |
Inherited methods | |
|---|---|
From
class
java.lang.Object
| |
String format (LogRecord record)
Format the given log record and return the formatted string.
The resulting formatted String will normally include a
localized and formatted version of the LogRecord's message field.
It is recommended to use the formatMessage(LogRecord)
convenience method to localize and format the message field.
| Parameters | |
|---|---|
record |
LogRecord:
the log record to be formatted. |
| Returns | |
|---|---|
String |
the formatted log record |
String formatMessage (LogRecord record)
Localize and format the message string from a log record. This method is provided as a convenience for Formatter subclasses to use when they are performing formatting.
The message string is first localized to a format string using the record's ResourceBundle. (If there is no ResourceBundle, or if the message key is not found, then the key is used as the format string.) The format String uses java.text style formatting.
| Parameters | |
|---|---|
record |
LogRecord:
the log record containing the raw message |
| Returns | |
|---|---|
String |
a localized and formatted message |
String getHead (Handler h)
Return the header string for a set of formatted records.
This base class returns an empty string, but this may be overridden by subclasses.
| Parameters | |
|---|---|
h |
Handler:
The target handler (can be null) |
| Returns | |
|---|---|
String |
header string |
String getTail (Handler h)
Return the tail string for a set of formatted records.
This base class returns an empty string, but this may be overridden by subclasses.
| Parameters | |
|---|---|
h |
Handler:
The target handler (can be null) |
| Returns | |
|---|---|
String |
tail string |
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