Socket in Java is not printing what it should

Server:

BufferedReader inFromClient = new BufferedReader(new InputStreamReader(connectionSocket.getInputStream()));
            String s = inFromClient.readLine();
            System.out.println("> "+s);

This simple code is returning the following output:

Howtomakeitnotshowthesesquareintheoutput,butrathershowthecontentthemessage(fifthlineoftheconsole)?

Completecode:

packagecom.estilosoft.servidor;importjava.io.BufferedReader;importjava.io.IOException;importjava.io.InputStreamReader;importjava.net.ServerSocket;importjava.net.Socket;publicclassServidor{publicstaticvoidmain(String[]args)throwsIOException{//TODOAuto-generatedmethodstubStringclientSentence;Stringcapitalized;ServerSocketsocket=null;try{//CriaumSocketServer(Socketcaracterísticodeumservidor)socket=newServerSocket(6831);System.out.println("abriu");

        while(true) {    
            Socket connectionSocket = socket.accept();
            System.out.println("Con "+ connectionSocket.getInetAddress().getHostAddress());

            BufferedReader inFromClient = new BufferedReader(new InputStreamReader(connectionSocket.getInputStream()));
            System.out.println("Iniciou");
            String s = inFromClient.readLine();
            System.out.println("Acabou");
            System.out.println("> "+s);


        } 

    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
        socket.close();
        System.out.println("fechou");
    }  
}


}