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Chen commented on COLLECTIONS-733: ---------------------------------- Maybe you can use a wrapper of ArrayBlockingQueue, check the capacity before pushing an element into the queue, if the queue is full, creat a new bigger ArrayBlockingQueue. Operations can only be blocked when the queue is empty. Is this queue what you want? > Thread-Safe Array Blocking Deque > -------------------------------- > > Key: COLLECTIONS-733 > URL: https://issues.apache.org/jira/browse/COLLECTIONS-733 > Project: Commons Collections > Issue Type: New Feature > Reporter: David Mollitor > Priority: Major > > The JDK offers an > [ArrayDeque|https://docs.oracle.com/javase/8/docs/api/java/util/ArrayDeque.html] > which is a resizable-array implementation of the > [Deque|https://docs.oracle.com/javase/8/docs/api/java/util/Deque.html] > interface. > The JDK also offers an > [ArrayBlockingQueue|https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ArrayBlockingQueue.html] > which is a bounded blocking queue backed by an array. > What I have had the need for several times now is a resizable-array > implementation of a bounded blocking queue. It should implement all the same > methods as the {{ArrayBlockingQueue}} but it can grow as needed, like an > {{ArrayDeque}}. -- This message was sent by Atlassian Jira (v8.3.4#803005)