content: /*
   * 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 <tt>Handler</tt> publishes log records to <tt>System.err</tt>.
   * By default the <tt>SimpleFormatter</tt> is used to generate brief summaries.
   * <p>
   * <b>Configuration:</b>
   * By default each <tt>ConsoleHandler</tt> is initialized using the following
   * <tt>LogManager</tt> 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>   &lt;handler-name&gt;.level
   *        specifies the default level for the <tt>Handler</tt>
   *        (defaults to <tt>Level.INFO</tt>). </li>
   * <li>   &lt;handler-name&gt;.filter
   *        specifies the name of a <tt>Filter</tt> class to use
   *        (defaults to no <tt>Filter</tt>). </li>
   * <li>   &lt;handler-name&gt;.formatter
   *        specifies the name of a <tt>Formatter</tt> class to use
   *        (defaults to <tt>java.util.logging.SimpleFormatter</tt>). </li>
   * <li>   &lt;handler-name&gt;.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>
   * <p>
   * @since 1.4
   */
  public class ConsoleHandler extends StreamHandler {
      // Private method to configure a ConsoleHandler from LogManager
      // properties and/or default values as specified in the class
      // javadoc.
      private void configure() {
          LogManager manager = LogManager.getLogManager();
          String cname = getClass().getName();
  
          setLevel(manager.getLevelProperty(cname +".level", Level.INFO));
          setFilter(manager.getFilterProperty(cname +".filter", null));
          setFormatter(manager.getFormatterProperty(cname +".formatter", new SimpleFormatter()));
          try {
              setEncoding(manager.getStringProperty(cname +".encoding", null));
          } catch (Exception ex) {
              try {
                  setEncoding(null);
              } catch (Exception ex2) {
                  // doing a setEncoding with null should always work.
                  // assert false;
              }
          }
      }
  
      /**
       * Create a <tt>ConsoleHandler</tt> for <tt>System.err</tt>.
       * <p>
       * The <tt>ConsoleHandler</tt> is configured based on
       * <tt>LogManager</tt> properties (or their default values).
       *
       */
      public ConsoleHandler() {
          sealed = false;
          configure();
          setOutputStream(System.err);
          sealed = true;
      }
  
      /**
       * Publish a <tt>LogRecord</tt>.
       * <p>
       * The logging request was made initially to a <tt>Logger</tt> object,
       * which initialized the <tt>LogRecord</tt> and forwarded it here.
       * <p>
       * @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 <tt>StreamHandler.close</tt> to do a flush but not
       * to close the output stream.  That is, we do <b>not</b>
       * close <tt>System.err</tt>.
       */
      @Override
      public void close() {
          flush();
      }
  }
  