如何在java中同步三个生产者线程和一个消费者线程

import java.util.LinkedList;
import java.util.Queue;

public class ProducerConsumerExample {
    private static final int MAX_SIZE = 10;
    private final Queue<Integer> queue = new LinkedList<>();

    public static void main(String[] args) {
        ProducerConsumerExample example = new ProducerConsumerExample();
        for (int i = 0; i < 3; i++) {
            new Thread(example.new Producer()).start();
        }
        new Thread(example.new Consumer()).start();
    }

    class Producer implements Runnable {
        private int item = 0;

        @Override
        public void run() {
            while (true) {
                synchronized (queue) {
                    while (queue.size() == MAX_SIZE) {
                        try {
                            queue.wait(); // 队列满时等待
                        } catch (InterruptedException e) {
                            Thread.currentThread().interrupt();
                        }
                    }
                    queue.add(item++);
                    System.out.println("Produced: " + item);
                    queue.notifyAll(); // 通知消费者线程
                }
            }
        }
    }

    class Consumer implements Runnable {
        @Override
        public void run() {
            while (true) {
                synchronized (queue) {
                    while (queue.isEmpty()) {
                        try {
                            queue.wait(); // 队列空时等待
                        } catch (InterruptedException e) {
                            Thread.currentThread().interrupt();
                        }
                    }
                    int item = queue.poll();
                    System.out.println("Consumed: " + item);
                    queue.notifyAll(); // 通知生产者线程
                }
            }
        }
    }
}