JavaScript is disabled on your browser.
Skip navigation links
Java™ Platform
Standard Ed. 8
compact1, compact2, compact3
java.util.logging

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
    • Constructor Detail

      • ConsoleHandler

        public ConsoleHandler()
        Create a ConsoleHandler for System.err.

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

    • Method Detail

      • 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
Skip navigation links
Java™ Platform
Standard Ed. 8

Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2025, Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.

Scripting on this page tracks web page traffic, but does not change the content in any way.

AltStyle によって変換されたページ (->オリジナル) /