Atv01.java

package uscs;

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

public class Atv01 {
	@SuppressWarnings("deprecation")
	public static void main(String args[]) {
		try {
			ServerSocket echoServer = new ServerSocket(1234);
			System.out.println("Servidor Ativo na Porta " + echoServer.getLocalPort());
			Socket clientSocket = echoServer.accept();
			DataInputStream is = new DataInputStream(clientSocket.getInputStream());
			PrintStream os = new PrintStream(clientSocket.getOutputStream());
			String line = is.readLine();
			os.println("Conectado ao Servidor na Porta 1234");
			os.println("Digite qualquer palavra e tecle Enter ou FIM para encerrar...");
			boolean recebe = true;
			while (recebe) {
				if (line == null || line.trim().equals("FIM")) {
					recebe = false;
				} else {
					System.out.println("Recebido do cliente:" + line);
					os.println("Enviado do Servidor: " + line);
					line = is.readLine();
				}
			}
			echoServer.close();
		} catch (IOException e) {
			System.out.println(e);
		}
	}
}