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What subclasses of the InputStream class do you know and what are they used for?

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Answer from AI

  • FileInputStream - for reading bytes from a file.
  • ByteArrayInputStream - for reading bytes from a byte array in memory.
  • PipedInputStream - for reading bytes from a stream written to by PipedOutputStream. Used for communication between threads.
  • FilterInputStream - an abstract class representing a filtering input stream. Subclasses are used to add functionality to other input streams.
    • BufferedInputStream - buffers input to improve performance.
    • DataInputStream - allows reading primitive data types in a machine-independent format.
    • PushbackInputStream - allows "pushing back" read bytes into the stream.
    • CheckedInputStream - computes a checksum of the read data.
    • CipherInputStream - for reading encrypted data.
  • SequenceInputStream - combines multiple input streams into one sequential stream.
  • ObjectInputStream - for deserializing Java objects.
  • GZIPInputStream - for reading data compressed with GZIP.
  • ZipInputStream - for reading data from ZIP archives.
  • JarInputStream - for reading data from JAR files.