A Client Program – Scanners and Writers

• InputStream and OutputStream send and receive bytes
• To send and receive text, use a scanner and a writer

  Scanner in = new Scanner(instream);
  PrintWriter out = new PrintWriter(outstream);

• A PrintWriter buffers the characters and only sends when the buffer is full
  • Buffering increases performance
• When sending a command, you want the whole command to be sent now
  • Flush the buffer manually:

    out.print(command);
    out.flush();