DateUtil.java

public static Date doParse(String toParse) {

        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd/MM/yyyy");

        try {
            return simpleDateFormat.parse(toParse);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return null;
    }

    public static List<Venda> doFilter(Date dateInicial, Date dateFinal, List<Venda> incommingVendas) {

        List<Venda> vendas = new ArrayList<Venda>();
        
        for (Venda v : incommingVendas) {
            if (v.getData().after(dateInicial) && v.getData().before(dateFinal)) {
                vendas.add(v);
            }
        }
        return vendas;
    }