Java 1C messages

import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.util.ArrayList;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JList;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import javax.swing.JTextArea;
import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JLabel;
import java.sql.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.event.ListSelectionEvent;


public class Main extends JFrame {
    private JPanel contentPane;
    private JTextField fromTextField;
    private JTextField toTextField;
    JList list;
    JTextArea textArea;
    ArrayList<String> text = new ArrayList<>();
    ArrayList<String> from = new ArrayList<>();
    ArrayList<String> to = new ArrayList<>();
    Connection con;
    String name;

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    String login = JOptionPane.showInputDialog("Введите логин:");
                    Main frame = new Main(login);
                    frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    void load_data() {
        try {
            Statement stm = con.createStatement();
            ResultSet res = stm.executeQuery(
                    "select * from message where `to` = '" + name + "'");
            text.clear();
            from.clear();
            to.clear();
            while (res.next()) {
                text.add(res.getString("text"));
                from.add(res.getString("from"));
                to.add(res.getString("to"));
            }
            DefaultListModel<String> model = new DefaultListModel<>();
            for (int i = 0; i < text.size(); ++i) {
                model.addElement(from.get(i));
            }
            list.setModel(model);
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    public Main(String login) {
        name = login;
        try {
            Class.forName("com.mysql.jdbc.Driver");
            con = DriverManager.getConnection(
                    "jdbc:mysql://ryadom.me/chat", "root", "root");
        } catch (ClassNotFoundException | SQLException e) {
            e.printStackTrace();
            JOptionPane.showMessageDialog(null, "Нет подключения");
            System.exit(0);
        }
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(100, 100, 754, 429);
        contentPane = new JPanel();
        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
        setContentPane(contentPane);
        contentPane.setLayout(null);

        list = new JList();
        list.addListSelectionListener(new ListSelectionListener() {
            public void valueChanged(ListSelectionEvent arg0) {
                int n = list.getSelectedIndex();

                fromTextField.setText(from.get(n));
                toTextField.setText(to.get(n));
                textArea.setText(text.get(n));

                fromTextField.setEditable(false);
                toTextField.setEditable(false);
                textArea.setEditable(false);
            }
        });
        list.setBounds(10, 11, 162, 334);
        contentPane.add(list);

        fromTextField = new JTextField();
        fromTextField.setEditable(false);
        fromTextField.setBounds(249, 11, 465, 20);
        contentPane.add(fromTextField);
        fromTextField.setColumns(10);

        toTextField = new JTextField();
        toTextField.setEditable(false);
        toTextField.setBounds(249, 42, 465, 20);
        contentPane.add(toTextField);
        toTextField.setColumns(10);

        textArea = new JTextArea();
        textArea.setEditable(false);
        textArea.setBounds(182, 73, 532, 272);
        contentPane.add(textArea);

        JButton checkButton = new JButton("\u041F\u0440\u043E\u0432\u0435\u0440\u0438\u0442\u044C");
        checkButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                load_data();
            }
        });
        checkButton.setBounds(10, 356, 162, 23);
        contentPane.add(checkButton);

        JButton createButton = new JButton("\u041D\u043E\u0432\u043E\u0435 \u043F\u0438\u0441\u044C\u043C\u043E");
        createButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                fromTextField.setText(name);
                toTextField.setText("");
                textArea.setText("");

                toTextField.setEditable(true);
                textArea.setEditable(true);
            }
        });
        createButton.setBounds(182, 356, 248, 23);
        contentPane.add(createButton);

        JButton sendButton = new JButton("\u041E\u0442\u043F\u0440\u0430\u0432\u0438\u0442\u044C");
        sendButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {

                try {
                    PreparedStatement stm = con.prepareStatement("INSERT INTO message (`from`, `to`, `text`) VALUES(?, ?, ?)");
                    stm.setString(1, fromTextField.getText());
                    stm.setString(2, toTextField.getText());
                    stm.setString(3, textArea.getText());
                    stm.execute();
                } catch (SQLException e1) {
                    e1.printStackTrace();
                }
                JOptionPane.showMessageDialog(null, "Отправлено!");
                toTextField.setEditable(false);
                textArea.setEditable(false);
            }
        });
        sendButton.setBounds(466, 356, 248, 23);
        contentPane.add(sendButton);

        JLabel lblNewLabel = new JLabel("\u041E\u0442:");
        lblNewLabel.setBounds(213, 12, 46, 14);
        contentPane.add(lblNewLabel);

        JLabel lblNewLabel_1 = new JLabel("\u041A\u043E\u043C\u0443:");
        lblNewLabel_1.setBounds(213, 45, 46, 14);
        contentPane.add(lblNewLabel_1);
        load_data();
    }

}