答案:package pr2;import java.util.Calendar;import java.util.Date;public class lx2_2_3 {public static void main(String args[]) {Calendar calendar = Calendar.getInstance();calendar.setTime(new Date());// 用当前时间初始化日历时间calendar.set(2000, 10, 1); //long time1 = calendar.getTimeInMillis();calendar.set(2010, 10, 1);long time2 = calendar.getTimeInMillis();long num = (time2 - time1) / (1000 * 60 * 60 * 24);System.out.println("相隔" num "天");}}