Java™ How To Program (Early Objects), Tenth Edition

Interface Buffer

The program consists of interface Buffer (Fig. 23.9) and classes Producer (Fig. 23.10), Consumer (Fig. 23.11), UnsynchronizedBuffer (Fig. 23.12) and SharedBufferTest (Fig. 23.13). Interface Buffer (Fig. 23.9) declares methods blockingPut (line 6) and blockingGet (line 9) that a Buffer (such as UnsynchronizedBuffer) must implement to enable the Producer thread to place a value in the Buffer and the Consumer thread to retrieve a value from the Buffer, respectively. In subsequent examples, methods blockingPut and blockingGet will call methods that throw InterruptedExceptions—typically this indicates that a method temporarily could be blocked from performing a task. We declare each method with a throws clause here so that we don’t ...