Program for producer and consumer problem using Threads

package q63229;
import java.util.Scanner;
class ProdCons {
    public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);
        System.out.print("number of items to be produced and consumed: ");
        int numItems = sc.nextInt();
        Product p = new Product(numItems);
        Thread producerThread = new Thread(new Producer(p));
        Thread consumerThread = new Thread(new Consumer(p));
        producerThread.start();
        consumerThread.start();
        sc.close();
    }
}

class Product {
    private int value;
    private boolean available = false;
	int n;
    Product(int n) {
		this.n = n;
	}

	public synchronized void put (int val) {
		while (available) {
			try {
				wait();
			} catch (InterruptedException e) { }
		}
		value = val;
		System.out.println("PUT: " + value);
		available = true;
		notify();
	}

	public synchronized int get() {
		while (!available) {
			try {
				wait();
			} catch (InterruptedException e) { }
		}
		System.out.println("GET: " + value);
		available = false;
		notify();
		return value;
	}
    

    
            
}

class Producer implements Runnable {
    Product p;
	Producer (Product p) {
		this.p = p;
	}
    public void run() {
		for (int i=0; i< p.n; i++) {
			p.put(i);
		}
	}
    
    
}

class Consumer implements Runnable {
    Product p;

	Consumer(Product p) {
		this.p = p;
	}

	public void run() {
		for (int i=0; i<p.n; i++) {
			p.get();
		}
	}