Uma enorme duvida!

public class AcaoPesquisarClientesPorNome implements KeyListener {
	public AcaoPesquisarClientesPorNome(final JTextField campoNome,final BeanTableModel<Cliente> model) {
		super();
		this.campoNome = campoNome;
		this.model=model;
		clienteDAO=new ClienteDAO();
		
	}
	private ClienteDAO clienteDAO;
	private JTextField campoNome;
	private BeanTableModel<Cliente> model;

	@Override
	public void keyPressed(KeyEvent e) {
	
		
	}

	@Override
	public void keyReleased(KeyEvent e) {
		new Thread(){
			public void run(){
				List<Cliente> listaDeClientes=clienteDAO.getClientesPorNome(campoNome.getText());
				if(listaDeClientes!=null&&listaDeClientes.size()!=0)
					model.setBeanList(listaDeClientes);
				else
					model.setBeanList(new ArrayList<Cliente>());
			}
		}.start();
		
		
	}

	@Override
	public void keyTyped(KeyEvent e) {
		// TODO Auto-generated method stub
		
	}
	


	

}