用Java计算两个日期之间的天数
我想要一个Java程序来计算两个日期之间的天数。键入第一个日期(德语符号;带空格:“dd mm yyyy”)
键入第二次约会。
程序应该计算这两个日期之间的天数。
我如何包括闰年和夏季?
我的代码:import java.util.Calendar;import java.util.Date;import java.util.Scanner;public class NewDateDifference {
public static void main(String[] args) {
System.out.print(“Insert first date: “);
Scanner s = new Scanner(System.in);
String[] eingabe1 = new String[3];
while (s.hasNext()) {
int i = 0;
insert1[i] = s.next();
if (!s.hasNext()) {
s.close();
break;
}
i++;
}
System.out.print(“Insert second date: “);
Scanner t = new Scanner(System.in);
String[] insert2 = new String[3];
while (t.hasNext()) {
int i = 0;
insert2[i] = t.next();
if (!t.hasNext()) {
t.close();
break;
}
i++;
}
Calendar cal = Calendar.getInstance();
cal.set(Calendar.DAY_OF_MONTH, Integer.parseInt(insert1[0]));
cal.set(Calendar.MONTH, Integer.parseInt(insert1[1]));
cal.set(Calendar.YEAR, Integer.parseInt(insert1[2]));
Date firstDate = cal.getTime();
cal.set(Calendar.DAY_OF_MONTH, Integer.parseInt(insert2[0]));
cal.set(Calendar.MONTH, Integer.parseInt(insert2[1]));
cal.set(Calendar.YEAR, Integer.parseInt(insert2[2]));
Date secondDate = cal.getTime();
long diff = secondDate.getTime() – firstDate.getTime();
System.out.println (“Days: ” + diff / 1000 / 60 / 60 / 24);
}}