Blocking Queues

import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;

public class Main {
    public static void main(String[] args) {
        BlockingQueue<Integer> queue = new LinkedBlockingQueue<>(3);

        Thread producer = new Thread(() -> produce(queue));
        Thread consumer = new Thread(() -> consume(queue));

        producer.start();
        consumer.start();

        try {
            producer.join();
            consumer.join();
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }
    }

    public static void produce(BlockingQueue<Integer> queue) {
        for (int i = 0; i < 5; i++) {
            try {
                queue.put(i);
                System.out.println("Produced: " + i);
                Thread.sleep(500);
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }
    }

    public static void consume(BlockingQueue<Integer> queue) {
        for (int i = 0; i < 5; i++) {
            try {
                int value = queue.take();
                System.out.println("Consumed: " + value);
                Thread.sleep(500);
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }
    }
}