java.text.ParseException: Unparseable date:

Hello guys, I am developing a crud with Javaweb, I tried to create a new employer(Funcionario) with it’s date of birth, but i had problems with date conversion. Look the codes below:
my input: <input type="date" value="${funcionario.dataNascimento}" name="datanascimentofuncionario" id="datanascimentofuncionario"/>

stmt.setDate(1, new java.sql.Date(funcionario.getDataNascimento().getTime()));


else if (dados.equals("datanascimentofuncionario")) {

The class to convert:

public class Conversoes {
    public static Date converterData(String data) throws ParseException {
        if (!data.trim().equals("") || !data.equals("")) {
            SimpleDateFormat fmt = new SimpleDateFormat("dd/MM/yyyy");
            Date date = fmt.parse(data);
            return date;
        } else {
            return null;

does anybody knows what can be the problem?
I appreciate your help guys