Connect to Google Talk by XMPP Smack : java

maven project structure

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at dependencies (pom.xml)

    <dependencies>
        ...
        ...
        ...
        
        <!-- SMACK -->
        <dependency>
            <groupId>org.igniterealtime.smack</groupId>
            <artifactId>smack</artifactId>
            <version>3.2.1</version>
        </dependency>
        <dependency>
            <groupId>org.igniterealtime.smack</groupId>
            <artifactId>smackx</artifactId>
            <version>3.2.1</version>
        </dependency>
        <!-- SMACK -->
            
        ...
        ...
        ...
    </dependencies>

at class path (Other Sources) /account.properties

...
...
...
email=YOUR_GOOGLE_EMAIL
password=YOUR_GOOGLE_PASSWORD
chatWith=CHAT_BUDDY_EMAIL
...
...
...

PropertiesFileUtils.java

package com.blogspot.na5cent.smacklearning;

import java.io.IOException;
import java.util.Properties;

/**
 *
 * @author redcrow
*  @link http://na5cent.blogspot.com/2013/07/connect-to-google-talk-by-xmpp-smack.html
 */
public class PropertiesFileUtils {

    private static Properties properties;

    public static synchronized Properties load(String path) throws IOException {
        if (properties == null) {
            properties = new Properties();
        }
        properties.load(PropertiesFileUtils.class.getResourceAsStream(path));
        return properties;
    }
}

Connect.java

package com.blogspot.na5cent.smacklearning;

import java.io.IOException;
import java.util.Properties;
import org.jivesoftware.smack.ConnectionConfiguration;
import org.jivesoftware.smack.PacketListener;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.filter.PacketTypeFilter;
import org.jivesoftware.smack.packet.Message;
import org.jivesoftware.smack.packet.Packet;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
*
 * @author redcrow
*  @link http://na5cent.blogspot.com/2013/07/connect-to-google-talk-by-xmpp-smack.html
 */
public class Connect {

    private static final Logger LOG = LoggerFactory.getLogger(Connect.class);
    private static final String GOOGLE_TALK_URL = "talk.google.com";
    private static final int GOOGLE_TALK_PORT = 5222;
    private static final String GOOGLE_TALK_SERVICE = "gmail.com";

    static {
        XMPPConnection.DEBUG_ENABLED = true;
    }

    public static void main(String[] args) throws XMPPException, IOException {
        Properties properties = PropertiesFileUtils.load("/account.properties");
        String email = properties.getProperty("email");
        String password = properties.getProperty("password");
        String chatWith = properties.getProperty("chatWith");

        ConnectionConfiguration config = new ConnectionConfiguration(GOOGLE_TALK_URL, GOOGLE_TALK_PORT, GOOGLE_TALK_SERVICE);
        XMPPConnection xmppConnection = new XMPPConnection(config);
        xmppConnection.connect();
        xmppConnection.login(email, password);


        xmppConnection.addPacketListener(new PacketListener() {
            public void processPacket(Packet packet) {
                LOG.debug("packet => {}", packet.toXML());
            }
        }, new PacketTypeFilter(Message.class));


        ChatManager chatManager = xmppConnection.getChatManager();
        Chat chat = chatManager.createChat(chatWith, new MessageListener() {
            public void processMessage(Chat chat, Message message) {
                LOG.debug("message body => {}", message.getBody());
            }
        });
        
        chat.sendMessage("hello google talk");
    }
}

Have fun for Learning!
reference : http://www.igniterealtime.org/projects/smack/index.jsp