写一个java代码根据身份证获取出生年月日，性别，年龄

您好，根据您提供的问题，我可以回答。以下是Java代码示例：

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

public class IDCardUtil {

    /**
     * 根据身份证号获取出生日期、性别、年龄
     * @param idCard 身份证号
     * @return 身份证信息数组，依次为出生日期、性别、年龄
     */
    public static String[] getIDCardInfo(String idCard) {
        String[] info = new String[3];
        String birthday = "";
        String gender = "";
        int age;

        if (idCard.length() == 18) {
            // 获取出生日期
            birthday = idCard.substring(6, 10) + "-" + idCard.substring(10, 12) + "-" + idCard.substring(12, 14);

            // 获取性别
            int genderCode = Integer.parseInt(idCard.substring(16, 17));
            gender = genderCode % 2 ==  ? "女" : "男";

            // 获取年龄
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
            try {
                Date birthDate = sdf.parse(birthday);
                Calendar cal = Calendar.getInstance();
                if (cal.before(birthDate)) {
                    throw new IllegalArgumentException("身份证号码不正确，出生日期晚于当前时间！");
                }
                int yearNow = cal.get(Calendar.YEAR);
                int monthNow = cal.get(Calendar.MONTH) + 1;
                int dayOfMonthNow = cal.get(Calendar.DAY_OF_MONTH);
                cal.setTime(birthDate);
                int yearBirth = cal.get(Calendar.YEAR);
                int monthBirth = cal.get(Calendar.MONTH) + 1;
                int dayOfMonthBirth = cal.get(Calendar.DAY_OF_MONTH);
                age = yearNow - yearBirth;
                if (monthNow < monthBirth || (monthNow == monthBirth && dayOfMonthNow < dayOfMonthBirth)) {
                    age--;
                }
            } catch (ParseException e) {
                throw new IllegalArgumentException("身份证号码不正确，出生日期格式错误！");
            }

            info[] = birthday;
            info[1] = gender;
            info[2] = String.valueOf(age);
        } else {
            throw new IllegalArgumentException("身份证号码长度不正确！");
        }

        return info;
    }

}

使用示例：

public static void main(String[] args) {
    String idCard = "110101199003077890";
    String[] info = IDCardUtil.getIDCardInfo(idCard);
    System.out.println("出生日期：" + info[]);
    System.out.println("性别：" + info[1]);
    System.out.println("年龄：" + info[2]);
}

输出结果：

出生日期：199-03-07
性别：男
年龄：31