Java charset - How to read correctly from System.in?

Question

I am creating an application to exchange messages between computers using Sockets, through cmd or terminal (I want it to run on linux and windows, console application).

But I’m having trouble coding. When I read an entry through System.in, on the Windows 7 console, the output is bugged. With the following code:

Scanner s = new Scanner(System.in);
System.out.println(s.nextLine());

Accented or special characters are not displayed correctly.

I’m using the following code to transmit messages:

Main.CHARSET = "UTF-8"

Scanner teclado = new Scanner(System.in,Main.CHARSET);
BufferedWriter saida = new BufferedWriter(new OutputStreamWriter(new BufferedOutputStream(cliente.getOutputStream()),Main.CHARSET)));
saida.write(nick + " conectado!");
saida.flush();
while (teclado.hasNextLine()) {
    saida.write(nick +": "+ s);
    saida.flush();
}

And to receive:

BufferedReader br = new BufferedReader(new InputStreamReader(servidor,Main.CHARSET)));
String s;
while ((s = br.readLine()) != null) {
    System.out.println(s);
}

The question is, how to properly read from the console and stream so that the other user receives and is able to view on their console?