//  LargestWithIntParameter.java  (c) 2005 Kari Laitinen

//  http://www.naturalprogramming.com

//  2004-10-08  File created.
//  2005-03-01  Last modification.

/*  In Java programs, it is not possible that a method
    would return data to its caller via a parameter that is
    of some basic type (int, long, float, double, etc. ).

    This program demonstrates that it is possible to return 
    data to a calling program by using an object that stores
    some "primitive" value.

*/

class IntParameter
{
   protected int int_value  =  0 ;

   public IntParameter()  {}

   public IntParameter( int  given_initial_value )
   {
      int_value  =  given_initial_value ;
   }

   public int get_value()
   {
      return  int_value ;
   }

   public void set_value( int given_new_value )
   {
      int_value  =  given_new_value ;
   }
}

class LargestWithIntParameter
{
   static void search_largest_integer( int[] array_of_integers,
                                       int   number_of_integers_in_array,

                                       IntParameter largest_integer_to_caller )
   {
      int  largest_integer     =  array_of_integers[ 0 ] ;
      int  integer_index  =  1 ;

      while (  integer_index  <  number_of_integers_in_array  )
      {
         if ( array_of_integers[ integer_index ] > largest_integer )
         {
            largest_integer  =  array_of_integers[ integer_index ] ;
         }

         integer_index   ++  ;
      }

      largest_integer_to_caller.set_value( largest_integer ) ;
   }

   public static void main( String[] not_in_use )
   {
      int[]  first_array   =  { 44, 2, 66, 33, 9 } ;
      int[]  second_array  =  { 888, 777, 66, 999, 998, 997 } ;

      IntParameter  found_largest_integer  =  new  IntParameter() ;

      search_largest_integer( first_array, 5,
                              found_largest_integer ) ;

      System.out.print( "\n The largest integer in first_array is "
                     +  found_largest_integer.get_value()  +  ".\n" ) ;

      search_largest_integer( second_array, 6,
                              found_largest_integer ) ;

      System.out.print( "\n The largest integer in second_array is "
                     +  found_largest_integer.get_value()  +  ".\n" ) ;
   }
}