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修改为带参数的 poll(timeout, unit) 方法,避免误解和混淆 #2703
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无参 poll() 会立即从队列中取元素,如果队列为空,直接返回 null(不阻塞); 带超时参数的 poll(timeout, unit):在指定时间内等待队列有元素可用。如果超时仍未获取到元素,则返回 null。 建议这里增加参数,避免初学者对阻塞队列的poll()方法有误列
无参 poll() 会立即从队列中取元素,如果队列为空,直接返回 null(不阻塞); 带超时参数的 poll(timeout, unit):在指定时间内等待队列有元素可用。如果超时仍未获取到元素,则返回 null。
建议这里增加参数,避免初学者对阻塞队列的poll()方法有误解
感谢补充完善👍
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无参 poll() 会立即从队列中取元素,如果队列为空,直接返回 null(不阻塞);
带超时参数的 poll(timeout, unit):在指定时间内等待队列有元素可用。如果超时仍未获取到元素,则返回 null。
建议这里增加参数,避免初学者对阻塞队列的poll()方法有误解