| /* |
| * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| |
| package java.util.logging; |
| |
| /** |
| * This {@code Handler} publishes log records to {@code System.err}. |
| * By default the {@code SimpleFormatter} is used to generate brief summaries. |
| * <p> |
| * <b>Configuration:</b> |
| * By default each {@code ConsoleHandler} is initialized using the following |
| * {@code LogManager} configuration properties where {@code <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. |
| * <ul> |
| * <li> <handler-name>.level |
| * specifies the default level for the {@code Handler} |
| * (defaults to {@code Level.INFO}). </li> |
| * <li> <handler-name>.filter |
| * specifies the name of a {@code Filter} class to use |
| * (defaults to no {@code Filter}). </li> |
| * <li> <handler-name>.formatter |
| * specifies the name of a {@code Formatter} class to use |
| * (defaults to {@code java.util.logging.SimpleFormatter}). </li> |
| * <li> <handler-name>.encoding |
| * the name of the character set encoding to use (defaults to |
| * the default platform encoding). </li> |
| * </ul> |
| * <p> |
| * For example, the properties for {@code ConsoleHandler} would be: |
| * <ul> |
| * <li> java.util.logging.ConsoleHandler.level=INFO </li> |
| * <li> java.util.logging.ConsoleHandler.formatter=java.util.logging.SimpleFormatter </li> |
| * </ul> |
| * <p> |
| * For a custom handler, e.g. com.foo.MyHandler, the properties would be: |
| * <ul> |
| * <li> com.foo.MyHandler.level=INFO </li> |
| * <li> com.foo.MyHandler.formatter=java.util.logging.SimpleFormatter </li> |
| * </ul> |
| * |
| * @since 1.4 |
| */ |
| public class ConsoleHandler extends StreamHandler { |
| |
| /** |
| * Create a {@code ConsoleHandler} for {@code System.err}. |
| * <p> |
| * The {@code ConsoleHandler} is configured based on |
| * {@code LogManager} properties (or their default values). |
| * |
| */ |
| public ConsoleHandler() { |
| // configure with specific defaults for ConsoleHandler |
| super(Level.INFO, new SimpleFormatter(), null); |
| |
| setOutputStreamPrivileged(System.err); |
| } |
| |
| /** |
| * Publish a {@code LogRecord}. |
| * <p> |
| * The logging request was made initially to a {@code Logger} object, |
| * which initialized the {@code LogRecord} and forwarded it here. |
| * |
| * @param record description of the log event. A null record is |
| * silently ignored and is not published |
| */ |
| @Override |
| public void publish(LogRecord record) { |
| super.publish(record); |
| flush(); |
| } |
| |
| /** |
| * Override {@code StreamHandler.close} to do a flush but not |
| * to close the output stream. That is, we do <b>not</b> |
| * close {@code System.err}. |
| */ |
| @Override |
| public void close() { |
| flush(); |
| } |
| } |