joda-timeで年齢取得

birthdayがStringで「1980/01/01」フォーマットだったときパターン

import org.joda.time.LocalDate;
import org.joda.time.Years;
import org.joda.time.format.DateTimeFormat;

public int getAge() {
        LocalDate now = new LocalDate();
        LocalDate birthday = LocalDate.parse(getBirthday(), DateTimeFormat.forPattern("yyyy/MM/dd"));
        Years age = Years.yearsBetween(birthday, now);
        return age.getYears();
    }