Subclasses of OutputStream, Reader, Writer classes in Java

Subclasses of the OutputStream class

  • OutputStream is an abstract class that defines stream byte output.
  • BufferedOutputStream is a buffered output stream.
  • ByteArrayOutputStream - all data sent to this stream is placed in a previously created buffer.
  • DataOutputStream is an output byte stream that includes methods for writing standard Java data types.
  • FileOutputStream - writing data to a file on a physical medium.
  • FilterOutputStream is an abstract class that provides an interface for add-on classes that add useful properties to existing streams.
  • PrintStream - an output stream that includes the print() and println() methods.
  • ObjectOutputStream - output stream for writing objects.
  • PipedOutputStream implements the concept of an output pipe.

Subclasses of the Reader class

  • Reader is an abstract class that describes character input.
  • BufferedReader - buffered input character stream.
  • CharArrayReader - the input stream that reads from a character array.
  • FileReader - the input stream that reads the file.
  • FilterReader is an abstract class that provides an interface for add-in classes.
  • InputStreamReader - input stream that translates bytes into characters.
  • LineNumberReader -the input stream that counts lines.
  • PipedReader - input channel.
  • PushbackReader - an input stream that allows characters to be returned back to the stream.
  • StringReader is the input stream reading from a string.

Subclasses of the Writer class

  • Writer is an abstract class that describes character output.
  • BufferedWriter is a buffered character stream output.
  • CharArrayWriter - the output stream that writes to the character array.
  • FileWriter - the output stream writing to the file.
  • FilterWriter is an abstract class that provides an interface for add-in classes.
  • OutputStreamWriter - an output stream that translates bytes to characters.
  • PipedWriter is an output channel.
  • PrintWriter - an output character stream that includes the print() and println() methods.
  • StringWriter - the output stream writing to a string.

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