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Add or substract days to current date using Java Calendar

  1. /*
  2.   Add or substract days to current date using Java Calendar
  3.   This example shows how to add or substract days in current date and time values
  4.   using Java Calendar class.
  5. */
  6.  
  7. import java.util.Calendar;
  8.  
  9. public class AddDaysToCurrentDate {
  10.  
  11.   public static void main(String[] args) {
  12.    
  13.     //create Calendar instance
  14.     Calendar now = Calendar.getInstance();
  15.    
  16.     System.out.println("Current date : " + (now.get(Calendar.MONTH) + 1)
  17.                         + "-"
  18.                         + now.get(Calendar.DATE)
  19.                         + "-"
  20.                         + now.get(Calendar.YEAR));
  21.    
  22.     //add days to current date using Calendar.add method
  23.     now.add(Calendar.DATE,1);
  24.  
  25.     System.out.println("date after one day : " + (now.get(Calendar.MONTH) + 1)
  26.                         + "-"
  27.                         + now.get(Calendar.DATE)
  28.                         + "-"
  29.                         + now.get(Calendar.YEAR));
  30.  
  31.    
  32.     //substract days from current date using Calendar.add method
  33.     now = Calendar.getInstance();
  34.     now.add(Calendar.DATE, -10);
  35.  
  36.     System.out.println("date before 10 days : " + (now.get(Calendar.MONTH) + 1)
  37.                         + "-"
  38.                         + now.get(Calendar.DATE)
  39.                         + "-"
  40.                         + now.get(Calendar.YEAR));
  41.    
  42.   }
  43. }
  44.  
  45. /*
  46. Typical output would be
  47. Current date : 12-25-2007
  48. date after one day : 12-26-2007
  49. date before 10 days : 12-15-2007
  50. */