參考：強烈推薦 http://www.cnblogs.com/WangHaiMing/p/8798709.html
BlockingQueue介面

public interface BlockingQueue<E> extends Queue<E> {
	boolean add(E e);
	boolean offer(E e);
	void put(E e) throws InterruptedException;
	boolean offer(E e, long timeout, TimeUnit unit) throws InterruptedException;
 

	E take() throws InterruptedException;
	E poll(long timeout, TimeUnit unit) throws InterruptedException;
	int remainingCapacity();
	boolean remove(Object o);
	public boolean contains(Object o);
	int drainTo(Collection<? super E> c);
	int drainTo(Collection<? super E> c, int maxElements)
 
;
}

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