public class Lab5 {
   // rather than worry about I/O problems, we'll just put the data here
   static String[] name = {"Fred", "Jane", "Frank", "Jill", "Fran", "Jack"};
   static int[] height = {66, 64, 73, 68, 63, 69};
   static int[] weight = {160, 120, 200, 180, 125, 173};
   static int next = 0;  // incremented by source to help detect the end of data
   static int exported = 0; // incremented by sink to stop the action after all data is processed

//       ________              ________              ______
//       |      |     ____     |      |     ____     |    | 
//  ---> |source| --->|b1|---> |middle| --->|b2|---> |sink| ---> 
//       |      |     ----     |      |     ----     |    | 
//       -------               --------              ------
//  

   static void source (Buffer<Person> b1) {
      //write your code for the source routine here
   }

   static void middleman (Buffer<Person> b1, Buffer<Person> b2) {
      //write your code for the middleman here
   }

   static void sink (Buffer<Person> buffer1) {
      //write your code for the sink here
   }

   public static void main(String[] args) {
      Buffer<Person> buffer1 = new Buffer<Person>();
      Buffer<Person> buffer2 = new Buffer<Person>();
      while (exported < name.length) {
         sink(buffer2);
         middleman(buffer1, buffer2);
         source(buffer1);
      }
   }

}