JDK8/Java8源码在线阅读

/*
 * Copyright (c) 1999, 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.
 *
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package javax.naming.event;

/**
  * This interface is the root of listener interfaces that
  * handle <tt>NamingEvent</tt>s.
  * It does not make sense for a listener to implement just this interface.
  * A listener typically implements a subinterface of <tt>NamingListener</tt>,
  * such as <tt>ObjectChangeListener</tt> or <tt>NamespaceChangeListener</tt>.
  *<p>
  * This interface contains a single method, <tt>namingExceptionThrown()</tt>,
  * that must be implemented so that the listener can be notified of
  * exceptions that are thrown (by the service provider) while gathering
  * information about the events that they're interested in.
  * When this method is invoked, the listener has been automatically deregistered
  * from the <tt>EventContext</tt> with which it has registered.
  *<p>
  * For example, suppose a listener implements <tt>ObjectChangeListener</tt> and
  * registers with a <tt>EventContext</tt>.
  * Then, if the connection to the server is subsequently broken,
  * the listener will receive a <tt>NamingExceptionEvent</tt> and may
  * take some corrective action, such as notifying the user of the application.
  *
  * @author Rosanna Lee
  * @author Scott Seligman
  *
  * @see NamingEvent
  * @see NamingExceptionEvent
  * @see EventContext
  * @see EventDirContext
  * @since 1.3
  */

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