Java Sockets #1 : Simplified Client/Server Application

Client.java

package net.sockets.simplified;


import java.io.DataOutputStream;
import java.io.IOException;
import java.net.Socket;
import java.util.Scanner;

public class Client {
    private Socket socket;
    private DataOutputStream out;
    private Scanner in;

    public Client(){
        try{
            socket = new Socket("127.0.0.1", Server.PORT);
            out = new DataOutputStream(socket.getOutputStream());
            in = new Scanner(System.in);
            writeMessages();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private void writeMessages() throws IOException {
        String line = "";
        while(!line.equals(Server.STOP_STRING)){
            line = in.nextLine();
            out.writeUTF(line);
        }
        close();
    }

    private void close() throws IOException {
        socket.close();
        out.close();
        in.close();
    }

    public static void main(String[] args) {
        new Client();
    }
}

Server.java

package net.sockets.simplified;


import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;

public class Server {
    private ServerSocket server;
    private DataInputStream in;
    public static final int PORT = 3030;
    public static final String STOP_STRING = "##";


    public Server(){
        try{
            server = new ServerSocket(PORT);
            iniConnections();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private void iniConnections() throws IOException {
        Socket clientSocket = server.accept();
        in = new DataInputStream(new BufferedInputStream(clientSocket.getInputStream()));
        readMessages();
        close();
    }

    private void close() throws IOException {
        in.close();
        server.close();
    }

    private void readMessages() throws IOException {
        String line = "";
        while(!line.equals(STOP_STRING)){
            line = in.readUTF();
            System.out.println(line);
        }
    }

    public static void main(String[] args) {
        new Server();
    }
}