Repeat the previous exercise in Java using synchronized statements or methods. Try to make your solution as simple and conceptually clear as possible. You will probably want to use notifyAll. Give a...

Repeat the previous exercise in Java using synchronized statements or methods. Try to make your solution as simple and conceptually clear as possible. You will probably want to use notifyAll. Give a more efficient solution to the previous exercise that avoids the use of notifyAll. (Warning: It is tempting to observe that the buffer can never be both full and empty at the same time, and to assume therefore that waiting threads are either all producers or all consumers. This need not be the case, however: if the buffer ever becomes even a temporary performance bottleneck, there may be an arbitrary number of waiting threads, including both producers and consumers.)