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年月日、性别、年龄
     * @param idCard 身份证号
     * @return String[]，包含出生年月日、性别、年龄
     */
    public static String[] getInfoByIdCard(String idCard) {
        String[] info = new String[3];
        String birthday = "";
        String gender = "";
        int age = ;
        if (idCard.length() == 15) {
            birthday = "19" + idCard.substring(6, 8) + "-" + idCard.substring(8, 10) + "-" + idCard.substring(10, 12);
            gender = Integer.parseInt(idCard.substring(14, 15)) % 2 ==  ? "女" : "男";
        } else if (idCard.length() == 18) {
            birthday = idCard.substring(6, 10) + "-" + idCard.substring(10, 12) + "-" + idCard.substring(12, 14);
            gender = Integer.parseInt(idCard.substring(16, 17)) % 2 ==  ? "女" : "男";
        }
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        try {
            Date birthDate = sdf.parse(birthday);
            Calendar cal = Calendar.getInstance();
            if (cal.before(birthDate)) {
                throw new IllegalArgumentException("身份证号不正确！");
            }
            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) {
                if (monthNow == monthBirth) {
                    if (dayOfMonthNow < dayOfMonthBirth) {
                        age--;
                    }
                } else {
                    age--;
                }
            }
        } catch (ParseException e) {
            e.printStackTrace();
        }
        info[] = birthday;
        info[1] = gender;
        info[2] = String.valueOf(age);
        return info;
    }

}

使用示例：

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

输出结果：

出生年月日：199-03-07
性别：男
年龄：31