输入一个日期,计算并输出是这一年的那一天,输入一个日期,计算并输出是这一年的那一天,用Java语言回答这个问题,,,感激不尽
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- devmiao 2015-06-23 15:12关注
public int orderDate(Date date){ int dateSum = 0; SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd"); String dateStr = format.format(date); System.out.println(dateStr); 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; }
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