第几天问题代码简化至11行
问题:请编写程序算出某一天是这一年的第几天
源代码:
import java.util.Calendar;
public class DayInYear {
public static void main(String rags[]) {
Calendar calendar = Calendar.getInstance();
calendar.set(2020, 1, 1);
long time1 = calendar.getTimeInMillis() / 1000 / 60 / 60 / 24;
calendar.set(2020, 5, 5);
long time2 = calendar.getTimeInMillis() / 1000 / 60 / 60 / 24;
System.out.println(time2 - time1 + 1);
}
}
运行结果: