Source Code

package javagui;

import com.github.steveice10.mc.auth.data.GameProfile;
import com.github.steveice10.mc.auth.exception.request.RequestException;
import com.github.steveice10.mc.protocol.MinecraftConstants;
import com.github.steveice10.mc.protocol.MinecraftProtocol;
import com.github.steveice10.mc.protocol.ServerLoginHandler;
import com.github.steveice10.mc.protocol.data.SubProtocol;
import com.github.steveice10.mc.protocol.data.game.entity.player.GameMode;
import com.github.steveice10.mc.protocol.data.game.setting.Difficulty;
import com.github.steveice10.mc.protocol.data.game.world.WorldType;
import com.github.steveice10.mc.protocol.data.message.ChatColor;
import com.github.steveice10.mc.protocol.data.message.ChatFormat;
import com.github.steveice10.mc.protocol.data.message.Message;
import com.github.steveice10.mc.protocol.data.message.MessageStyle;
import com.github.steveice10.mc.protocol.data.message.TextMessage;
import com.github.steveice10.mc.protocol.data.message.TranslationMessage;
import com.github.steveice10.mc.protocol.data.status.PlayerInfo;
import com.github.steveice10.mc.protocol.data.status.ServerStatusInfo;
import com.github.steveice10.mc.protocol.data.status.VersionInfo;
import com.github.steveice10.mc.protocol.data.status.handler.ServerInfoBuilder;
import com.github.steveice10.mc.protocol.data.status.handler.ServerInfoHandler;
import com.github.steveice10.mc.protocol.data.status.handler.ServerPingTimeHandler;
import com.github.steveice10.mc.protocol.packet.ingame.client.ClientChatPacket;
import com.github.steveice10.mc.protocol.packet.ingame.server.ServerChatPacket;
import com.github.steveice10.mc.protocol.packet.ingame.server.ServerJoinGamePacket;
import com.github.steveice10.packetlib.Client;
import com.github.steveice10.packetlib.Server;
import com.github.steveice10.packetlib.Session;
import com.github.steveice10.packetlib.event.server.ServerAdapter;
import com.github.steveice10.packetlib.event.server.ServerClosedEvent;
import com.github.steveice10.packetlib.event.server.SessionAddedEvent;
import com.github.steveice10.packetlib.event.server.SessionRemovedEvent;
import com.github.steveice10.packetlib.event.session.DisconnectedEvent;
import com.github.steveice10.packetlib.event.session.PacketReceivedEvent;
import com.github.steveice10.packetlib.event.session.SessionAdapter;
import com.github.steveice10.packetlib.tcp.TcpSessionFactory;

import java.net.Proxy;
import java.util.Arrays;


import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JButton;
import javax.swing.JOptionPane;
import java.awt.BorderLayout;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JTextField;
import javax.swing.JLabel;
import java.awt.Font;

public class App {

    private JFrame frame;
    private JTextField textField;
    Session session = null;
    private String USERNAME = "Strietzl";
    private String PASSWORD = "pascal13";
    private String SERVER_HOST = "spela.granskogen.nu";
    private int SERVER_PORT = 25565;
    private Proxy PROXY = Proxy.NO_PROXY;
    private Proxy AUTH_PROXY = Proxy.NO_PROXY;
    private JLabel lblStatus;


    /**
     * Launch the application.
     */
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    App window = new App();
                    window.frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    /**
     * Create the application.
     */
    public App() {
        initialize();
    }

    /**
     * Initialize the contents of the frame.
     */
    private void initialize() {
        frame = new JFrame();
        frame.setBounds(100, 100, 556, 372);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().setLayout(null);

        lblStatus = new JLabel("Status: clicc a button plz");
        lblStatus.setFont(new Font("Tahoma", Font.PLAIN, 15));
        lblStatus.setBounds(231, 265, 299, 32);
        frame.getContentPane().add(lblStatus);

        JButton btnMakeBotJoin = new JButton("make bot join eks dee");
        btnMakeBotJoin.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                MinecraftProtocol protocol = null;
                try {
                    protocol = new MinecraftProtocol(USERNAME, PASSWORD);
                    lblStatus.setText("Status: Authenticated");
                } catch(RequestException e) {
                    lblStatus.setText("Status: Failed to authenticate");
                    e.printStackTrace();
                }
                Client client = new Client(SERVER_HOST, SERVER_PORT, protocol, new TcpSessionFactory(PROXY));
                client.getSession().setFlag(MinecraftConstants.AUTH_PROXY_KEY, AUTH_PROXY);
                client.getSession().addListener(new SessionAdapter() {
                    @Override
                    public void packetReceived(PacketReceivedEvent event) {
                        if(event.getPacket() instanceof ServerJoinGamePacket) {
                            event.getSession().send(new ClientChatPacket("hello humans"));
                            session = event.getSession();
                            lblStatus.setText("Joined game!");
                        }
                    }
                });

            }
        });
        btnMakeBotJoin.setBounds(10, 11, 182, 71);
        frame.getContentPane().add(btnMakeBotJoin);

        textField = new JTextField();
        textField.setBounds(20, 200, 250, 32);
        frame.getContentPane().add(textField);
        textField.setColumns(10);

        JButton btnMakeBotTalk = new JButton("make bot talk eks dee");
        btnMakeBotTalk.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                session.send(new ClientChatPacket(textField.getText()));
            }
        });
        btnMakeBotTalk.setBounds(30, 243, 191, 51);
        frame.getContentPane().add(btnMakeBotTalk);
    }
}