package expressaoregular;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class MascaraValidacaoTelefone {

    public static boolean ehTelefoneValido(String telefone) {
        if (telefone == null || telefone.trim().isEmpty()) {
            return false;
        }

        Pattern patternTel1 = Pattern.compile("\\(\\d{2}\\)\\s9\\d{4}\\-?\\d{4}");
        Matcher matcherTel1 = patternTel1.matcher(telefone);

        Pattern patternTel2 = Pattern.compile("\\d{2}\\s9\\d{8}");
        Matcher matcherTel2 = patternTel2.matcher(telefone);

        if (matcherTel1.find() || matcherTel2.find()) {
            return true;
        }

        return false;
    }

}