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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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<html>
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<head>
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Copyright (c) 1999, 2006, Oracle and/or its affiliates. All rights reserved.
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DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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This code is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License version 2 only, as
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published by the Free Software Foundation. Oracle designates this
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particular file as subject to the "Classpath" exception as provided
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by Oracle in the LICENSE file that accompanied this code.
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This code is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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version 2 for more details (a copy is included in the LICENSE file that
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accompanied this code).
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You should have received a copy of the GNU General Public License version
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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</head>
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<body bgcolor="white">
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Provides the means for dynamically plugging in support for accessing
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naming and directory services through the <tt>javax.naming</tt>
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and related packages.
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<p>
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This package defines the service provider interface (SPI) of the Java Naming
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and Directory Interface<font size=-2><sup>TM</sup></font> (JNDI).
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JNDI provides naming and directory functionality to applications
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written in the Java programming language. It is designed to be
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independent of any specific naming or directory service
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implementation. Thus a variety of services--new, emerging, and
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already deployed ones--can be accessed in a common way.
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<p>
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The JNDI SPI provides the means for creating JNDI service providers,
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through which JNDI applications access different naming and
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directory services.
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<h4>Plug-in Architecture</h4>
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The service provider package allows different implementations to be plugged in
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dynamically.
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These different implementations include those for the
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<em>initial context</em>,
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and implementations for contexts that can be reached
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from the initial context.
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<h4>Java Object Support</h4>
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The service provider package provides support
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for implementors of the
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<tt>javax.naming.Context.lookup()</tt>
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method and related methods to return Java objects that are natural
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and intuitive for the Java programmer.
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For example, when looking up a printer name from the directory,
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it is natural for you to expect to get
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back a printer object on which to operate.
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<h4>Multiple Naming Systems (Federation)</h4>
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JNDI operations allow applications to supply names that span multiple
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naming systems. So in the process of completing
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an operation, one service provider might need to interact
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with another service provider, for example, to pass on
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the operation to be continued in the next naming system.
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The service provider package provides support for
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different providers to cooperate to complete JNDI operations.
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<h2>Package Specification</h2>
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The JNDI SPI Specification and related documents can be found in the
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<a href="../../../../technotes/guides/jndi/index.html">JNDI documentation</a>.
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@since 1.3
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</body>
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</html>
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<body>
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</body>
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