Scanner scanner = new Scanner(System.in);
System.out.println("Digite o CPF: ");
String cpf = scanner.nextLine();
Pattern pattern = Pattern.compile("\\d{3}.\\d{3}.\\d{3}-\\d{2}");
Matcher matcher = pattern.matcher(cpf);
if (matcher.find()) {
System.out.println("CPF válido!");
} else {
System.out.println("CPF inválido!");
}
scanner.close();
