java计算工龄 java计算工龄

计算工龄原则：若是2000-10-12作为开始工作时间，则到下一年的2001-10-13算为一年。有个bug，不满一年的工龄是错误的。

import java.util.Date;

import java.util.Calendar;

public int workAge(Date nowTime, Date workTime){

int year = 0;

//当前时间的年月日

Calendar cal = Calendar.getInstance();

cal.setTime(nowTime);

int nowYear = cal.get(Calendar.YEAR);

int nowMonth = cal.get(Calendar.MONTH);

int nowDay = cal.get(Calendar.DAY_OF_MONTH);

//开始工作时间的年月日

cal.setTime(workTime);

int workYear = cal.get(Calendar.YEAR);

int workMonth = cal.get(Calendar.MONTH);

int workDay = cal.get(Calendar.DAY_OF_MONTH);

//得到工龄

year = nowYear - workYear; //得到年差

//若目前月数少于开始工作时间的月数，年差-1

if (nowMonth < workMonth){

year = year - 1;

}else if (nowMonth == workMonth){

//当月数相等时，判断日数，若当月的日数小于开始工作时间的日数，年差-1

if (nowDay < workDay){

year = year - 1;

}

}

return year;

}