1.把出生日期字符串转换为日期格式。
publicstaticDate parse(String strDate) throwsParseException {
SimpleDateFormat sdf = newSimpleDateFormat("yyyy-MM-dd");
returnsdf.parse(strDate);
}
2.计算年龄
publicstaticintgetAge(Date birthDay) throwsException {
Calendar cal = Calendar.getInstance();
if(cal.before(birthDay)) { //出生日期晚于当前时间，无法计算
thrownewIllegalArgumentException(
"The birthDay is before Now.It's unbelievable!");
}
intyearNow = cal.get(Calendar.YEAR); //当前年份
intmonthNow = cal.get(Calendar.MONTH); //当前月份
intdayOfMonthNow = cal.get(Calendar.DAY_OF_MONTH); //当前日期
cal.setTime(birthDay);
intyearBirth = cal.get(Calendar.YEAR);
intmonthBirth = cal.get(Calendar.MONTH);
intdayOfMonthBirth = cal.get(Calendar.DAY_OF_MONTH);
intage = yearNow - yearBirth; //计算整岁数
if(monthNow <= monthBirth) {
if(monthNow == monthBirth) {
if(dayOfMonthNow < dayOfMonthBirth) age--;//当前日期在生日之前，年龄减一
}else{
age--;//当前月份在生日之前，年龄减一
} } returnage; }
转载地址：https://www.cnblogs.com/fuchuanzhipan1209/p/9596614.html
