/* * Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * *   - Redistributions of source code must retain the above copyright *     notice, this list of conditions and the following disclaimer. * *   - Redistributions in binary form must reproduce the above copyright *     notice, this list of conditions and the following disclaimer in the *     documentation and/or other materials provided with the distribution. * *   - Neither the name of Sun Microsystems nor the names of its *     contributors may be used to endorse or promote products derived *     from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ import javax.naming.*;import javax.naming.directory.*;import java.util.Hashtable;/** * Demonstrates how to enable connection pooling. Use debug option * to observe connection usage. * * usage: java -Dcom.sun.jndi.ldap.connect.pool.debug=fine UsePool */class UsePool {    public static void main(String[] args) {	// Set up environment for creating initial context        Hashtable<String, Object> env = new Hashtable<String, Object>(11);	env.put(Context.INITIAL_CONTEXT_FACTORY, 	    "com.sun.jndi.ldap.LdapCtxFactory");	env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");	// Enable connection pooling	env.put("com.sun.jndi.ldap.connect.pool", "true");	try {	    // Create one initial context (Get connection from pool)	    DirContext ctx = new InitialDirContext(env);	    System.out.println(ctx.getAttributes("ou=NewHires"));	    // do something useful with ctx	    // Close the context when we're done	    ctx.close();   // Return connection to pool	    // Create another initial context (Get connection from pool)	    DirContext ctx2 = new InitialDirContext(env);	    System.out.println(ctx2.getAttributes("ou=People"));	    // do something useful with ctx2	    // Close the context when we're done	    ctx2.close();   // Return connection to pool	} catch (NamingException e) {	    e.printStackTrace();	}    }}