Java函数的并发和多线程中的阻塞队列作用是什么？

import java.util.concurrent.ArrayBlockingQueue;

public class ConcurrentFileProcessor {

    private final BlockingQueue<File> queue;
    private final int numWorkers;

    public ConcurrentFileProcessor(int capacity, int numWorkers) {
        this.queue = new ArrayBlockingQueue<>(capacity);
        this.numWorkers = numWorkers;
    }

    public void processFiles(List<File> files) {
        // 生产者线程
        Thread producer = new Thread(() -> {
            for (File file : files) {
                try {
                    queue.put(file);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        });

        // 消费者线程
        for (int i = 0; i < numWorkers; i++) {
            Thread consumer = new Thread(() -> {
                while (true) {
                    try {
                        File file = queue.take();
                        // 处理文件
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            });
            consumer.start();
        }

        producer.start();
        producer.join(); // 等待生产者完成
    }
}