Class ConsoleHandler

public class ConsoleHandler
extends StreamHandler

This Handler publishes log records to System.err. By default the SimpleFormatter is used to generate brief summaries.

Configuration: By default each ConsoleHandler is initialized using the following LogManager configuration properties where <handler-name> refers to the fully-qualified class name of the handler. If properties are not defined (or have invalid values) then the specified default values are used.

  • <handler-name>.level specifies the default level for the Handler (defaults to Level.INFO).
  • <handler-name>.filter specifies the name of a Filter class to use (defaults to no Filter).
  • <handler-name>.formatter specifies the name of a Formatter class to use (defaults to java.util.logging.SimpleFormatter).
  • <handler-name>.encoding the name of the character set encoding to use (defaults to the default platform encoding).

For example, the properties for ConsoleHandler would be:

  • java.util.logging.ConsoleHandler.level=INFO
  • java.util.logging.ConsoleHandler.formatter=java.util.logging.SimpleFormatter

For a custom handler, e.g. com.foo.MyHandler, the properties would be:

  • com.foo.MyHandler.level=INFO
  • com.foo.MyHandler.formatter=java.util.logging.SimpleFormatter
Since:
1.4

Constructors

Constructor Description
ConsoleHandler()

Create a ConsoleHandler for System.err.

Methods

Modifier and Type Method Description
void close()

Override StreamHandler.close to do a flush but not to close the output stream.
void publish​(LogRecord record)

Publish a LogRecord.

Methods declared in class java.util.logging.StreamHandler

flush, isLoggable, setEncoding, setOutputStream

Methods declared in class java.util.logging.Handler

getEncoding, getErrorManager, getFilter, getFormatter, getLevel, reportError, setErrorManager, setFilter, setFormatter, setLevel

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructors

ConsoleHandler

public ConsoleHandler()

Create a ConsoleHandler for System.err.

The ConsoleHandler is configured based on LogManager properties (or their default values).

Methods

publish

public void publish(LogRecord record)

Publish a LogRecord.

The logging request was made initially to a Logger object, which initialized the LogRecord and forwarded it here.

Overrides:
publish in class StreamHandler
Parameters:
record - description of the log event. A null record is silently ignored and is not published

close

public void close()

Override StreamHandler.close to do a flush but not to close the output stream. That is, we do not close System.err.

Overrides:
close in class StreamHandler

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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/11/docs/api/java.logging/java/util/logging/ConsoleHandler.html