Utilizar GridLayout e BorderLayout

import javax.swing.*;
import java.awt.*;


public class Teste extends JFrame {


public JLabel lblNome, lblEndereco, lblTelefone;
public JTextField jtfNome, jtfEndereco, jtfTelefone;

public JTextArea jtaCadastro;

public JButton btnBotaoOK, btnBotaoCancelar;


public Teste() {

// painel com os dados
lblNome = new JLabel(" Nome :");
jtfNome = new JTextField();
lblEndereco = new JLabel(" Endereço :");
jtfEndereco = new JTextField();
lblTelefone = new JLabel(" Telefone :");
jtfTelefone = new JTextField();

JPanel pGrid = new JPanel(new GridLayout(3, 2));
pGrid.add(lblNome);
pGrid.add(jtfNome);
pGrid.add(lblEndereco);
pGrid.add(jtfEndereco);
pGrid.add(lblTelefone);
pGrid.add(jtfTelefone);

// painel com o cadastro
jtaCadastro = new JTextArea();

JScrollPane pCadastro = new JScrollPane(jtaCadastro);

// painel com os comandos
btnBotaoOK = new JButton("OK");
btnBotaoCancelar = new JButton("Cancelar");

JPanel pBotoes = new JPanel(new GridLayout(0, 2));
pBotoes.add(btnBotaoOK);
pBotoes.add(btnBotaoCancelar);

// painel do JFrame
this.setLayout(new BorderLayout());
this.getContentPane().add(pGrid, BorderLayout.NORTH);
this.getContentPane().add(pCadastro, BorderLayout.CENTER);
this.getContentPane().add(pBotoes, BorderLayout.SOUTH);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setTitle("Cadastro");
this.setSize(400, 200);
this.setResizable(false);
this.setLocationRelativeTo(null);
this.setVisible(true);
}


public static void main(String[] args) {
JFrame.setDefaultLookAndFeelDecorated(true);
new Teste();
}


}