Package edu.princeton.cs.algs4

Class BinaryOut

  • public final class BinaryOut
extends Object
    Binary output. This class provides methods for converting primitive type variables (boolean, byte, char, int, long, float, and double) to sequences of bits and writing them to an output stream. The output stream can be standard output, a file, an OutputStream or a Socket. Uses big-endian (most-significant byte first).

    The client must flush() the output stream when finished writing bits.

    The client should not intermix calls to BinaryOut with calls to Out; otherwise unexpected behavior will result.

    Author:
    Robert Sedgewick, Kevin Wayne

    • Constructor Summary

      Constructors 
      Constructor Description
      BinaryOut()
      Initializes a binary output stream from standard output.
      BinaryOut​(OutputStream os)
      Initializes a binary output stream from an OutputStream.
      BinaryOut​(String filename)
      Initializes a binary output stream from a file.
      BinaryOut​(Socket socket)
      Initializes a binary output stream from a socket.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void close()
      Flushes and closes the binary output stream.
      void flush()
      Flushes the binary output stream, padding 0s if number of bits written so far is not a multiple of 8.
      static void main​(String[] args)
      Test client.
      void write​(boolean x)
      Writes the specified bit to the binary output stream.
      void write​(byte x)
      Writes the 8-bit byte to the binary output stream.
      void write​(char x)
      Writes the 8-bit char to the binary output stream.
      void write​(char x, int r)
      Writes the r-bit char to the binary output stream.
      void write​(double x)
      Writes the 64-bit double to the binary output stream.
      void write​(float x)
      Writes the 32-bit float to the binary output stream.
      void write​(int x)
      Writes the 32-bit int to the binary output stream.
      void write​(int x, int r)
      Writes the r-bit int to the binary output stream.
      void write​(long x)
      Writes the 64-bit long to the binary output stream.
      void write​(short x)
      Write the 16-bit int to the binary output stream.
      void write​(String s)
      Writes the string of 8-bit characters to the binary output stream.
      void write​(String s, int r)
      Writes the string of r-bit characters to the binary output stream.

    • Constructor Detail

      • BinaryOut

        public BinaryOut()
        Initializes a binary output stream from standard output.

      • BinaryOut

        public BinaryOut​(OutputStream os)
        Initializes a binary output stream from an OutputStream.
        Parameters:
        os - the OutputStream

      • BinaryOut

        public BinaryOut​(String filename)
        Initializes a binary output stream from a file.
        Parameters:
        filename - the name of the file

      • BinaryOut

        public BinaryOut​(Socket socket)
        Initializes a binary output stream from a socket.
        Parameters:
        socket - the socket

    • Method Detail

      • flush

        public void flush()
        Flushes the binary output stream, padding 0s if number of bits written so far is not a multiple of 8.

      • close

        public void close()
        Flushes and closes the binary output stream. Once it is closed, bits can no longer be written.

      • write

        public void write​(boolean x)
        Writes the specified bit to the binary output stream.
        Parameters:
        x - the boolean to write

      • write

        public void write​(byte x)
        Writes the 8-bit byte to the binary output stream.
        Parameters:
        x - the byte to write.

      • write

        public void write​(int x)
        Writes the 32-bit int to the binary output stream.
        Parameters:
        x - the int to write

      • write

        public void write​(int x,
                  int r)
        Writes the r-bit int to the binary output stream.
        Parameters:
        x - the int to write
        r - the number of relevant bits in the char
        Throws:
        IllegalArgumentException - unless r is between 1 and 32
        IllegalArgumentException - unless x is between 0 and 2r - 1

      • write

        public void write​(double x)
        Writes the 64-bit double to the binary output stream.
        Parameters:
        x - the double to write

      • write

        public void write​(long x)
        Writes the 64-bit long to the binary output stream.
        Parameters:
        x - the long to write

      • write

        public void write​(float x)
        Writes the 32-bit float to the binary output stream.
        Parameters:
        x - the float to write

      • write

        public void write​(short x)
        Write the 16-bit int to the binary output stream.
        Parameters:
        x - the short to write.

      • write

        public void write​(char x)
        Writes the 8-bit char to the binary output stream.
        Parameters:
        x - the char to write
        Throws:
        IllegalArgumentException - unless x is between 0 and 255

      • write

        public void write​(char x,
                  int r)
        Writes the r-bit char to the binary output stream.
        Parameters:
        x - the char to write
        r - the number of relevant bits in the char
        Throws:
        IllegalArgumentException - unless r is between 1 and 16
        IllegalArgumentException - unless x is between 0 and 2r - 1

      • write

        public void write​(String s)
        Writes the string of 8-bit characters to the binary output stream.
        Parameters:
        s - the String to write
        Throws:
        IllegalArgumentException - if any character in the string is not between 0 and 255

      • write

        public void write​(String s,
                  int r)
        Writes the string of r-bit characters to the binary output stream.
        Parameters:
        s - the String to write
        r - the number of relevant bits in each character
        Throws:
        IllegalArgumentException - unless r is between 1 and 16
        IllegalArgumentException - if any character in the string is not between 0 and 2r - 1

      • main

        public static void main​(String[] args)
        Test client. Read bits from standard input and write to the file specified on command line.
        Parameters:
        args - the command-line arguments