Bounded PriorityBlockingQueue

Question

PriorityBlockingQueue is unbounded, but I need to bound it somehow. What is the best way to achieve that?

For information, the bounded PriorityBlo

Answer 1

I actually wouldn't subclass it. While I can't put together example code right now, I'd suggest a version of the decorator pattern.

Create a new class and implement the interfaces implemented by your class of interest: PriorityBlockingQueue. I've found the following interfaces used by this class:

Serializable, Iterable, Collection, BlockingQueue, Queue

In the constructor for a class, accept a PriorityBlockingQueue as a constructor parameter.

Then implement all the methods required by the interfaces via the instances of the PriorityblockingQueue. Add any code required to make it Bounded. This is a fairly standard implementation of a Decorator pattern.