JAVA 根据身份证计算年龄的实现代码
下面一段代码给大家分享java根据身份证计算年龄的方法,具体代码如下所示:
birthDate = idCard.substring(6,10)+"-"+idCard.substring(10,12)+"-"+idCard.substring(12,14)
public static int getAgefromBirthTime(String birthTimeString){
// 先截取到字符串中的年、月、日
String strs[] = birthTimeString.trim().split("-");
int selectYear = Integer.parseInt(strs[0]);
int selectMonth = Integer.parseInt(strs[1]);
int selectDay = Integer.parseInt(strs[2]);
// 得到当前时间的年、月、日
Calendar cal = Calendar.getInstance();
int yearNow = cal.get(Calendar.YEAR);
int monthNow = cal.get(Calendar.MONTH) + 1;
int dayNow = cal.get(Calendar.DATE);
// 用当前年月日减去生日年月日
int yearMinus = yearNow - selectYear;
int monthMinus = monthNow - selectMonth;
int dayMinus = dayNow - selectDay;
int age = yearMinus;
if (yearMinus < 0) {// 选了未来的年份
age = 0;
} else if (yearMinus == 0) {// 同年的,要么为1,要么为0
if (monthMinus < 0) {// 选了未来的月份
age = 0;
} else if (monthMinus == 0) {// 同月份的
if (dayMinus < 0) {// 选了未来的日期
age = 0;
} else if (dayMinus >= 0) {
age = 1;
}
} else if (monthMinus > 0) {
age = 1;
}
} else if (yearMinus > 0) {
if (monthMinus < 0) {// 当前月>生日月
} else if (monthMinus == 0) {// 同月份的,再根据日期计算年龄
if (dayMinus < 0) {
} else if (dayMinus >= 0) {
age = age + 1;
}
} else if (monthMinus > 0) {
age = age + 1;
}
}
return age;
}
下面在看下java根据出生日期获得年龄
public static int getAge(Date birthDay) throws Exception {
Calendar cal = Calendar.getInstance();
if (cal.before(birthDay)) {
throw new IllegalArgumentException(
"The birthDay is before Now.It's unbelievable!");
}
int yearNow = cal.get(Calendar.YEAR);
int monthNow = cal.get(Calendar.MONTH);
int dayOfMonthNow = cal.get(Calendar.DAY_OF_MONTH);
cal.setTime(birthDay);
int yearBirth = cal.get(Calendar.YEAR);
int monthBirth = cal.get(Calendar.MONTH);
int dayOfMonthBirth = cal.get(Calendar.DAY_OF_MONTH);
int age = yearNow - yearBirth;
if (monthNow <= monthBirth) {
if (monthNow == monthBirth) {
if (dayOfMonthNow < dayOfMonthBirth) age--;
}else{
age--;
}
}
System.out.println("age:"+age);
return age;
}
总结
以上所述是小编给大家介绍的JAVA 根据身份证计算年龄,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对网站的支持!
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