如何检查日期是否超过 7 天 [英] How to check if date exceeds more than seven days

问题描述

I would like to check if two date exceeds a week, like, check if two dates have seven days,

at point the data range should be within a week only(7 Days).

i have tried something like this,

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class IsDateRangeExceedsWeek 
{
    public static void main( String[] args ) 
    {
        try{

            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
            Date fromDate = sdf.parse("2015-05-01");
            Date toDate = sdf.parse("2015-05-07");

            System.out.println(sdf.format(fromDate));
            System.out.println(sdf.format(toDate));

            if(fromDate.compareTo(toDate)>0){
                System.out.println("From Date should be less than To Date");
            } else if(fromDate.compareTo(toDate)==0){
                System.out.println("From Date is equal to To Date");
            } 

        }catch(ParseException ex){
            ex.printStackTrace();
        }
    }
}

Could some one help ?

解决方案

The easiest way is to use Jodatime and use

Days.daysBetween(start, end).getDays()

Another solution is to use Calendar, add 7 days and compare again.

  Calendar c=Calendar.getInstance();
  c.setTime(fromDate);
  c.add(Calendar.DATE,7);
  if(c.getTime().compareTo(toDate)<0){
    It's more than 7 days.
  }

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