Java 根据年月日获取当前年龄-蒲公英云

Java 根据年月日获取当前年龄

港控/mmm° 2022-05-22 08:36 575阅读 0赞

主要代码

public static int getAgeByBirthDay(String birthDay){
    if (birthDay == null || birthDay.length()<4) {
        return 0;
    }
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
    //得到当前的年份
    String cYear = sdf.format(new Date()).substring(0,4);
    String cMouth = sdf.format(new Date()).substring(5,7);
    String cDay = sdf.format(new Date()).substring(8,10);
    //得到生日年份
    String birth_Year = birthDay .substring(0,4);
    String birth_Mouth = birthDay .substring(5,7);
    String birth_Day = birthDay .substring(8,10);
    //年月日比较后得到年龄
    int age = Integer.parseInt(cYear) - Integer.parseInt(birth_Year);
    if ((Integer.parseInt(cMouth) - Integer.parseInt(birth_Mouth))<0) {
        age=age-1;
    }else if ((Integer.parseInt(cMouth) - Integer.parseInt(birth_Mouth))==0) {
        if ( (Integer.parseInt(cDay) - Integer.parseInt(birth_Day))>0) {
            age=age-1;
        }else {
            age = Integer.parseInt(cYear) - Integer.parseInt(birth_Year);
        }
    }else if ((Integer.parseInt(cMouth) - Integer.parseInt(birth_Mouth))>0) {
        age = Integer.parseInt(cYear) - Integer.parseInt(birth_Year);
    }
    return age;
}