Question

两个朋友想要知道第一个朋友与第二个朋友相比多少。写一个程序，确定两个生日之间的天数，假设生日符合MMDD格式，并且两个朋友都在同一年出生。

我是编程新手，在回答这个问题时我需要帮助！谢谢！

Answer 1

计算两个日期之间的天数的计划：

import java.util.Date;
class Example{
public int numberOfDays(String fromDate,String toDate)
{    
   java.util.Calendar cal1 = new java.util.GregorianCalendar();
   java.util.Calendar cal2 = new java.util.GregorianCalendar();

   //split year, month and days from the date using StringBuffer.
   StringBuffer sBuffer = new StringBuffer(fromDate);
   String yearFrom = sBuffer.substring(6,10);
   String monFrom = sBuffer.substring(0,2);
   String ddFrom = sBuffer.substring(3,5);
   int intYearFrom = Integer.parseInt(yearFrom);
   int intMonFrom = Integer.parseInt(monFrom);
   int intDdFrom = Integer.parseInt(ddFrom);

   // set the fromDate in java.util.Calendar
   cal1.set(intYearFrom, intMonFrom, intDdFrom);

   //split year, month and days from the date using StringBuffer.
   StringBuffer sBuffer1 = new StringBuffer(toDate);
   String yearTo = sBuffer1.substring(6,10);
   String monTo = sBuffer1.substring(0,2);
   String ddTo = sBuffer1.substring(3,5);
   int intYearTo = Integer.parseInt(yearTo);
   int intMonTo = Integer.parseInt(monTo);
   int intDdTo = Integer.parseInt(ddTo);

   // set the toDate in java.util.Calendar
   cal2.set(intYearTo, intMonTo, intDdTo);

   //call method daysBetween to get the number of days between two dates
   int days = daysBetween(cal1.getTime(),cal2.getTime());
   return days;
   }

   //This method is called by the above method numberOfDays
   public int daysBetween(Date d1, Date d2)
   {
    return (int)( (d2.getTime() - d1.getTime()) / (1000 * 60 * 60 * 24));
   }
   public static void main(String args[]){
   Example obj= new Example();
   int num= obj.numberOfDays("04-19-2013", "07-19-2013");
   System.out.println("Number of days between mentioned dates are: "+num);
  }
 }

确定两个出生日期之间的天数

1 个答案: