可以直接拷贝运行。
package year;
import java.util.Scanner;
public class year {
public static void main(String[] args) {
// TODO Auto-generated method stub
year y = new year();
y.fun();
}
public void fun(){
String str = shuru();
int year = Integer.parseInt(str.split(" ")[0]);
int month = Integer.parseInt(str.split(" ")[1]);
int day = Integer.parseInt(str.split(" ")[2]);
jisuan(year,month,day);
}
private String shuru(){
System.out.print("输入年月日中间以空格间隔：");
Scanner s = new Scanner(System.in);
return s.nextLine();
}
private void jisuan(int year, int month,int day){
int i = 0;
int j = 0;
//是闰年
if(year%400 == 0||year%4==0&&year%100!=0){
switch(month){
case 12: i+=31;
case 11: i+=30;
case 10: i+=31;
case 9: i+=30;
case 8: i+=31;
case 7: i+=31;
case 6: i+=30;
case 5: i+=31;
case 4: i+=30;
case 3: i+=31;
case 2: i+=28;
case 1: i+=31;
}
if(month == 1||month == 3||month == 5||month == 7||month == 8||month == 10||month == 12){
j = 31 - day;
System.out.println(i-j);
}else if(month == 2){
j = 28 - day;
System.out.println(i-j);
}else{
j = 30 - day;
System.out.println(i - j);
}
}else{
switch(month){
case 12: i+=31;
case 11: i+=30;
case 10: i+=31;
case 9: i+=30;
case 8: i+=31;
case 7: i+=31;
case 6: i+=30;
case 5: i+=31;
case 4: i+=30;
case 3: i+=31;
case 2: i+=29;
case 1: i+=31;
}
if(month == 1||month == 3||month == 5||month == 7||month == 8||month == 10||month == 12){
j = 31 - day;
System.out.println(i-j);
}else if(month == 2){
j = 28 - day;
System.out.println(i-j);
}else{
j = 30 - day;
System.out.println(i - j);
}
}
}
}
比如输入：1994 3 28
输出：88
1994年的第88天。