Socket Client

SocketClient.java

import java.io.*;
import java.net.*;

public final class SocketClient {
    private static final String SERVER_HOST = "localhost";
    private static final int SERVER_PORT    = 9999;

    public static void main(String[] args) {
        if (args.length < 1) {
            System.err.println("Require at least 1 argument !!");
            System.exit(1);
        }

        Socket socket = null;

        try {
            socket        = new Socket(SocketClient.SERVER_HOST, SocketClient.SERVER_PORT);
            Reader input  = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            Writer output = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));

            for (String arg : args) {
                output.write(arg);
            }

            output.write('.');
            output.flush();

            char[] buf = new char[4096];

            while (input.read(buf) != -1) {
                System.out.println(buf);
            }
        } catch (UnknownHostException error) {
            error.printStackTrace();
        } catch (IOException error) {
            error.printStackTrace();
        } finally {
            try {
                if (socket != null) {
                    socket.close();
                }
            } catch (IOException error) {
                error.printStackTrace();
            }
        }
    }
}