java语言根据输入的年月日计算当年天数

Question

import java.util.Scanner;
public class mokuaiyizuoyi 
{
    public static void main(String[] args) 
    {
        System.out.println("请输入年");
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        System.out.println("请输入月");
        int b = sc.nextInt();
        System.out.println("请输入日");
        int c = sc.nextInt();
        System.out.println(d);

    }
}
 

Answer 1

如下：

import java.io.*;
import java.util.*;

class test  
{
    public static void main (String[] args) throws java.lang.Exception
    {
        Calendar calendar_a = Calendar.getInstance();
        calendar_a.set(2011,9,10);
        int day_of_year = calendar_a.get(Calendar.DAY_OF_YEAR);
        System.out.println(day_of_year);
    }
}