什么是SimpleDate？无论如何，这可以帮助您入门
import java.util.GregorianCalendar; import java.util.Calendar; public class CalcAge { public static void main(String [] args) { // remember ... months are 0-based : jan=0 feb=1 ... System.out.println ("1962-11-11 : " + age(1962,10,11)); System.out.println ("1999-12-03 : " + age(1999,11,3)); } private static int age(int y, int m, int d) { Calendar cal = new GregorianCalendar(y, m, d); Calendar now = new GregorianCalendar(); int res = now.get(Calendar.YEAR) - cal.get(Calendar.YEAR); if((cal.get(Calendar.MONTH) > now.get(Calendar.MONTH)) || (cal.get(Calendar.MONTH) == now.get(Calendar.MONTH) && cal.get(Calendar.DAY_OF_MONTH) > now.get(Calendar.DAY_OF_MONTH))) { res--; } return res; }}
