“Closing” a blocking queue

Question

I’m using java.util.concurrent.BlockingQueue in a very simple producer-consumer scenario. E.g. this pseudo code depicts the consumer part:

class QueueCo         


        

Answer 1

Today I solved this problem using a wrapper object. Since the ComplexObject is too complex to subclass I wrapped the ComplexObject into ComplexObjectWrapper object. Then used ComplexObjectWrapper as the generic type.

public class ComplexObjectWrapper {
ComplexObject obj;
}

public class EndOfQueue extends ComplexObjectWrapper{}

Now instead of BlockingQueue I did BlockingQueue

Since I had control of both the Consumer and Producer this solution worked for me.