package IteratorHelper;

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class ConsumerProducerGood {

  public static void main (String [] args) {
	  //Buffer buf = new Buffer();
	    
	    // create new threads
	    Thread prod = new Producer();
	    Thread cons = new Consumer();
	  InputStreamReader ISR = new InputStreamReader(System.in); 
	  BufferedReader BR = new BufferedReader(ISR); 
	  int low = 0;
      int high= 0;
      try 
      {
             // output the question.
             System.out.print("Enter value for low : ");
             // read in the console input one line (BR.readLine) and then convert to a integer
             low = Integer.parseInt(BR.readLine());
             System.out.print("Enter value for high : ");
             high = Integer.parseInt(BR.readLine());
             for (int i=low;i<high;i++)
             {
            	 System.out.print("The values are : "+i);
             }
      }
      catch (Exception ex)
      {
             // if the input was a string.
             System.out.println(ex.toString());
      }
	  
    // starting threads
    prod.start();
    cons.start();
    
    // Wait for the threads to finish
    try {
    	prod.join();
    	cons.join();
    } catch (InterruptedException e) {return;}
  }
 
} 

class Buffer {
  		private int contents;
  		private boolean empty = true;
  		
  		public synchronized void put (int i) throws InterruptedException { 
  			while (empty == false) { 	//wait till the buffer becomes empty
  				try { wait(); }
  				catch (InterruptedException e) {throw e;}
  			}
  			contents = i;
  			empty = false;
  			System.out.println("Producer: put..." + i);
  			notify();
  		} 
  		
  		public synchronized int get () throws InterruptedException {
  			while (empty == true)  {	//wait till something appears in the buffer
  				try { 	wait(); }
  				catch (InterruptedException e) {throw e;}
  			}
  			empty = true;
  			notify();
  			int val = contents;
  			System.out.println("Consumer: got..." + val);
  			return val;
  		}
}