夏C++QT5跨平台界面编程原理和实战大全视频

static class Producer extends Thread {        private final Queue<Integer> queue;        private final Lock lock;        private final Condition queueEmpty;        private final Condition queueFull;        public Producer(Queue<Integer> queue, Lock lock, Condition queueEmpty, Condition queueFull) {            this.queue = queue;            this.lock = lock;            this.queueEmpty = queueEmpty;            this.queueFull = queueFull;        }        @Override