Which of these class is not related to input and output stream in terms of functioning?OptionsWriterFileInputStreamReader

The class that is not related to input and output stream in terms of functioning is Writer.

Explanation:

• Writer: This is an abstract class that is used for character output but does not specifically deal with input and output streams in the way that the others do.
• FileInputStream: This class is used for reading bytes from a file as an input stream.
• InputStream: This is a superclass from which many input stream classes derive, specifically designed for byte input.
• Reader: This class is also an abstract class that is meant for reading character streams.

In conclusion, while FileInputStream and Reader handle input/output functionalities directly, Writer is primarily concerned with output and does not directly relate to streams in the same sense as the others listed.