Eventos - juntar componentes com classes dao

package swing;

import java.awt.BorderLayout;
import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.Color;

public class ClienteJFrame extends JFrame {

	private JPanel contentPane;
	private JTextField textField;
	private JTextField textField_1;
	private JLabel lblCodcliente;
	private JTextField textField_2;

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

	/**
	 * Create the frame.
	 */
	public ClienteJFrame() {
		setTitle("Cliente");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JLabel lblNome = new JLabel("Nome:");
		lblNome.setBounds(25, 59, 46, 14);
		contentPane.add(lblNome);
		
		textField = new JTextField();
		textField.setBounds(134, 56, 86, 20);
		contentPane.add(textField);
		textField.setColumns(10);
		
		textField_1 = new JTextField();
		textField_1.setBounds(134, 98, 86, 20);
		contentPane.add(textField_1);
		textField_1.setColumns(10);
		
		JLabel lblTelefone = new JLabel("Telefone:");
		lblTelefone.setBounds(25, 101, 63, 14);
		contentPane.add(lblTelefone);
		
		JButton btnOk = new JButton("OK");
		btnOk.setForeground(Color.RED);
		btnOk.setBounds(23, 151, 89, 23);
		contentPane.add(btnOk);
		
		lblCodcliente = new JLabel("CodCliente:");
		lblCodcliente.setBounds(25, 22, 87, 14);
		contentPane.add(lblCodcliente);
		
		textField_2 = new JTextField();
		textField_2.setBounds(134, 19, 86, 20);
		contentPane.add(textField_2);
		textField_2.setColumns(10);
	}
}

package sql;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import model.Cliente;

public class AcessoClienteDAO implements ClienteDAO{


	public void inserir(Cliente c) throws AcessoClienteException
	{
		Connection conexao = null;
		PreparedStatement comando = null;
		try
		{
			conexao = Conexao.getConexao();  
			String sql = "INSERT INTO cliente VALUES (?, ?, ?)";
			comando = conexao.prepareStatement(sql);  
			comando.setInt(1, c.getCodc());
			comando.setString(2, c.getNomec());
			comando.setString(3, c.getFonec());
			comando.executeUpdate();  
			System.out.println(sql);  

		}
		catch(SQLException e)
		{
			throw new AcessoClienteException("erro de inserção de cliente", e);
		}
		finally
		{
			if(conexao != null)
			{
				try
				{
					conexao.close();
					comando.close();
				}
				catch(SQLException e2)
				{
				}
			}
		}
	}

	public List<Cliente> buscarTodos() {
		Connection conexao = null;
		PreparedStatement comando = null;
		ResultSet resultado = null;

		try {
			try {
				conexao = Conexao.getConexao();

				String sql = "SELECT * FROM cliente";     
				comando = conexao.prepareStatement(sql);  
				resultado = comando.executeQuery();  

				List<Cliente> lista = new ArrayList<Cliente>();
				while(resultado.next()) {
					int codc = resultado.getInt("codc");
					String nomec = resultado.getString("nomec");
					String fonec = resultado.getString("fonec");
					lista.add(new Cliente(codc, nomec, fonec));
				}
				return lista;
			} finally {
				if (resultado != null) resultado.close();
				if (comando != null) comando.close();
				if (conexao != null) conexao.close();
			}
		} catch(SQLException e) {
			e.printStackTrace();
			throw new AcessoClienteException("erro de busca de cliente", e);        	
		}

	}

}