//  ImportantBirthdays.java  (c) Kari Laitinen

//  http://www.naturalprogramming.com

//  2014-11-24  Java file created.
//  2014-11-24  Last modification.

//  This version of the Birthdays.java program uses the new
//  time-related class LocalDate (available in Java 1.8 and later.)

import java.util.Scanner ;
import java.time.LocalDate ;

class ImportantBirthdays
{
   public static void main( String[] not_in_use )
   {
      Scanner keyboard = new Scanner( System.in ) ;

      System.out.print( "\n Type in your date of birth as YYYY-MM-DD"
                     +  "\n Please, use four digits for the year"
                     +  "\n and two digits for month and day:  " ) ; 

      String date_of_birth_as_string = keyboard.nextLine() ;

      LocalDate date_of_birth  = LocalDate.parse( date_of_birth_as_string ) ;

      System.out.printf( "\n   You were born on a %tA",  date_of_birth ) ;
      System.out.print(  "\n   Here are your days to celebrate. You are\n" ) ;

      int  years_to_celebrate  =  10 ;

      while ( years_to_celebrate  <  80 )
      {
         LocalDate date_to_celebrate  =
                        date_of_birth.plusYears( years_to_celebrate ) ;

         System.out.printf( "\n   %1$d years old on %2$tF (%2$tA)",
                            years_to_celebrate,
                            date_to_celebrate  ) ;

         years_to_celebrate  =  years_to_celebrate  +  10 ;
      }
   }
}

/******
      // The following would be another possibility to 
      // write the first part of this program. This way the program
      // would accept an input date written as: 1977-7-8

      keyboard.useDelimiter( "[-\\s]" ) ;

      int  year_of_birth   =  keyboard.nextInt() ;
      int  month_of_birth  =  keyboard.nextInt() ;
      int  day_of_birth    =  keyboard.nextInt() ;

      LocalDate date_of_birth  =  LocalDate.of(
                          year_of_birth, month_of_birth, day_of_birth ) ;

*****/