Mastering Java: The Ultimate Quiz for 'Thinking in Java'

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Which class is NOT part of the Java NIO package?

  1. ByteBuffer

  2. FileLock

  3. PipedOutputStream

  4. Selector

The correct answer is: PipedOutputStream

ByteBuffer, FileLock, and Selector are all classes in the Java NIO package. The only class not part of this package is PipedOutputStream, which is part of the java.io package. This option is incorrect because all other choices are valid classes in the Java NIO package.

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