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Tinder is a Java based XMPP library, providing an implementation for XMPP stanzas and components. Tinders origins lie in code that's shared between Jive Software's Openfire and Whack implementations. The implementation that's provided in Tinder hasn't been written again from scratch. Instead, code has been moved from the original projects into Tinder, preserving al of the existing features and functionality. Most of the code that's now in Tinder is based on the org.xmpp package implementation that previously existed in Openfire and Whack. This is the code that defines classes such as Packet, JID, IQ, Component and their extensions. Additionally, some multi-purpose code (such as the DataForm and Result Set Management implementations have been moved to Tinder as well.

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/**
 * Copyright (C) 2004-2009 Jive Software. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.xmpp.muc;

import net.jcip.annotations.NotThreadSafe;

import org.xmpp.packet.Presence;

/**
 * Initial presence sent when joining an existing room or creating a new room. The JoinRoom presence
 * indicates the posibility of the sender to speak MUC.
 *
 * Code example:
 * 
 * // Join an existing room or create a new one.
 * JoinRoom joinRoom = new JoinRoom("[email protected]/notebook", "[email protected]/nick");
 *
 * component.sendPacket(joinRoom);
 * 
 *
 * @author Gaston Dombiak
 */
@NotThreadSafe
public class JoinRoom extends Presence {

    /**
     * Creates a new Presence packet that could be sent to a MUC service in order to join
     * an existing MUC room or create a new one.
     *
     * @param from the real full JID of the user that will join or create a MUC room.
     * @param to a full JID where the bare JID is the MUC room address and the resource is the
     *        nickname of the user joining the room.
     */
    public JoinRoom(String from, String to) {
        super();
        setFrom(from);
        setTo(to);
        addChildElement("x", "http://jabber.org/protocol/muc");
    }
}