uuidtest.java

适合初学者使用的cms和jxta方面的代码

/*
 * Copyright (c) 2001 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:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. 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.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *       Sun Microsystems, Inc. for Project JXTA."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact Project JXTA at http://www.jxta.org.
 *
 * 5. Products derived from this software may not be called "JXTA",
 *    nor may "JXTA" appear in their name, without prior written
 *    permission of Sun.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS 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.
 *
 *====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of Project JXTA.  For more
 * information on Project JXTA, please see
 * <http://www.jxta.org/>.
 *
 * This license is based on the BSD license adopted by the Apache Foundation.
 *
 * $Id: UUIDTest.java,v 1.1 2001/04/15 05:37:27 dac Exp $
 *
 */

package net.jxta.cms.test;

import net.jxta.cms.util.UUID;

import java.util.Hashtable;
import java.util.Random;

/**
 * Test for UUID utility class.
 */
public class UUIDTest extends Test {
    private int count;

    public static void main(String[] args) throws Throwable {
	new UUIDTest().run(args);
    }

    public String getName() {
	return "UUID";
    }

    public void run(String[] args) throws Throwable {
	if (args != null && args.length > 0) {
	    count = Integer.parseInt(args[0]);
	}
	Hashtable uuids = new Hashtable();
	UUID.setRandom(new Random());
	p("+ Generating " + count + " UUIDs");
	for (int i = 0; i < count; i++) {
	    UUID uuid = new UUID();
	    if (uuids.containsKey(uuid)) {
		p("! Duplicate UUID generated: " + uuid);
		break;
	    }
	    uuids.put(uuid, uuid);
	}
	p("+ Convert UUID to string and back");
	UUID uuid1 = new UUID();
	p("  (UUID = " + uuid1 + ")");
	String s = uuid1.toString();
	UUID uuid2 = new UUID(s);
	if (!uuid1.equals(uuid2)) {
	    p("! UUIDs do not match: " + uuid1 + " and " + uuid2);
	}
    }
}