ServidorThread.java

package Chat;

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

public class Server extends Thread {
	private Socket socket;
	
	public Server(Socket socket) {
		this.socket = socket;
	}
	
	// Esse loop vai ficar rodando em outra thread e fica recebendo as mensagens vindas do cliente.
	public void run() {
		while(this.socket.isConnected()) {

			try {
				DataInputStream in = new DataInputStream(socket.getInputStream());
				System.out.println(in.readUTF());
			} catch (IOException e) {}
		}
	}

	public static void main(String[] args) throws IOException {
		ServerSocket servidor = new ServerSocket(7171, 10);
		
		for (int i = 0; i < 10; i++) {
			Socket socket = servidor.accept();
			
			// Criando a thread de leitura do servidor
			Server server = new Server(socket);
			server.start();
			
		
			while(socket.isConnected()) {
				DataOutputStream out = new DataOutputStream(socket.getOutputStream());
				System.out.println("Digite algo para enviar: ");
				Scanner teclado = new Scanner(System.in);
				out.writeUTF("[Servidor]:" + teclado.nextLine());
			}
		}
	}

}