GridBagLayout desarrumado

import javax.swing.<em>;

import java.awt.</em>;

import java.awt.event.*;

public class Login extends JFrame implements ActionListener

{

private String cmd;

public Login()

{

setTitle("Login");
    setSize(100,100);
    GridBagLayout layout = new GridBagLayout();
    GridBagConstraints c = new GridBagConstraints();
    c.fill= GridBagConstraints.HORIZONTAL;

    getContentPane().setLayout(layout);

    JButton btnLogin = new JButton("Login");
    JButton btnCancelar = new JButton("Cancelar");

    JLabel lblLogin = new JLabel("Usuário");
    JLabel lblSenha = new JLabel("Senha");

    JTextField txtLogin = new JTextField(15);
    JPasswordField txtSenha = new JPasswordField(15);


    c.gridy = 0;
    c.gridx = 0;
    layout.setConstraints(lblLogin, c);
    getContentPane().add(lblLogin);

    c.gridy = 1;
    c.gridx = 0;
    layout.setConstraints(lblSenha, c);
    getContentPane().add(lblSenha);

    c.gridy = 0;
    c.gridx = 1;
    layout.setConstraints(txtLogin, c);
    getContentPane().add(txtLogin);

    c.gridy = 1;
    c.gridx = 1;
    layout.setConstraints(txtSenha, c);
    getContentPane().add(txtSenha);

[color=“red”]        c.gridy = 2;

c.gridx = 0;

c.gridheight = 6;

layout.setConstraints(btnLogin, c);

getContentPane().add(btnLogin);

btnLogin.addActionListener(this);

c.gridy = 2;
    c.gridx = 1;
    layout.setConstraints(btnCancelar, c);
    getContentPane().add(btnCancelar);
    Conexao cn = new Conexao();
    cn.conDataBase();[/color]

    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    //setResizable(false);

    pack();
    setVisible(true);

}
public void actionPerformed(ActionEvent e) {
  cmd = e.getActionCommand();
  if (cmd == "Login")  {
     JOptionPane.showMessageDialog(null, "Login", "Autenticação",
     JOptionPane.ERROR_MESSAGE);
  }
}
public static void main(String args[])
{
    net.java.plaf.LookAndFeelPatchManager.initialize();
    new Login();
}