Java生日计算年龄工具

package com.web.backend.util;

import java.util.Calendar;
import java.util.Date;

/**
* @Author: SongZS
* @Description: 通过生日获取年龄计算工具
* @Date: Created in 18:23 2018/8/16
* @Modified By:
*/
public class GetAgeByBirthdayUtil {

public static int getAgeByBirthday(Date birthday) {
int age = 0;
try {
Calendar calendar= Calendar.getInstance();
calendar.setTime(new Date());

Calendar birthday = Calendar.getInstance();
birthday.setTime(birthday);

if (birthday.after(calendar)) {
age = 0;
} else {
age = calendar.get(Calendar.YEAR) - birthday.get(Calendar.YEAR);
if (calendar.get(Calendar.DAY_OF_YEAR) > birthday.get(Calendar.DAY_OF_YEAR)) {
age += 1;
}
}
return age;
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
}

  使用

SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date bithday = format.parse("Birthday");
int age = GetAgeByBirthUtil.getAgeByBirthday(bithday);
System.out.println(age);

  

posted @ 2018-08-16 18:42  宋宋宋哥  阅读(550)  评论(0编辑  收藏  举报