输入一个日期，判断当前日期在当前年份是第几天？
代码如下:
package testCase;import java.util.Scanner;public class JudgeDayOfYear { /* 输入某年某月某日，判断这一天是这一年的第几天？ */ public static void main(String[] args) { Scanner scanner = new Scanner(System.in);// 创建输入流扫描器 System.out.PRintln("请输入YYYY-MM-DD格式的日期字符串："); String line = scanner.nextLine();// 获取用户输入的一行文本 int i = orderDate(line); System.out.println("输入的日期是当前年的第" + i + "天"); scanner.close(); } public static int orderDate(String dateStr) { int dateSum = 0; int year = Integer.valueOf(dateStr.substring(0, 4)); int month = Integer.valueOf(dateStr.substring(5, 7)); int day = Integer.valueOf(dateStr.substring(8, 10)); for (int i = 1; i < month; i++) { switch (i) { case 1: case 3: case 5: case 7: case 8: case 10: case 12: dateSum += 31; break; case 4: case 6: case 9: case 11: dateSum += 30; break; case 2: if (((year % 4 == 0) & (year % 100 != 0)) | (year % 400 == 0)) dateSum += 29; else dateSum += 28; } } return dateSum = dateSum + day; }}`新闻热点
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