public static String addDate(String day,int x)
{
Date date = null;
try
{
date = sdf.parse(day);
}
catch (ParseException ex)
{
ex.printStackTrace();
}
if (date==null) return "";
Calendar cal=Calendar.getInstance();
cal.setTime(date);
cal.add(Calendar.DAY_OF_MONTH,x);
date=cal.getTime();
// System.out.println("after(or before) days is "+format.format(date));
cal=null;
return sdf.format(date);
}
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