[Ch15a] A dumb pinging client, potential potential for code magents for end of 15a

package ch15a.magnet;

import java.io.*;

import java.net.InetSocketAddress;

import java.nio.channels.*;

import java.time.LocalDateTime;

import java.time.format.DateTimeFormatter;

import java.time.format.FormatStyle;

import java.util.concurrent.TimeUnit;

import static java.nio.charset.StandardCharsets.UTF_8;

public class PingingClient {

  public static void main(String[] args) {

    new PingingClient().go();

  }

  public void go() {

    InetSocketAddress serverAddress = new InetSocketAddress("127.0.0.1", 5000);

    try (SocketChannel socketChannel = SocketChannel.open(serverAddress)) {

      PrintWriter writer = new PrintWriter(Channels.newWriter(socketChannel, UTF_8));

      System.out.println("Networking established");

      for (int i = 0; i < 10; i++) {

        String message = "ping " + i;

        writer.println(message);

        writer.flush();

        System.out.println(LocalDateTime.now().format(DateTimeFormatter.ofLocalizedTime(FormatStyle.MEDIUM)) + " Sent " + message);

        TimeUnit.SECONDS.sleep(1);

      }

    } catch (IOException | InterruptedException ex) {

      ex.printStackTrace();

    }

  }

}

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