sunnymattas

public class Slack implements Messenger {

  @Override
  public void send(final String message) {
    if (isValid(message)) {
      SlackClient client = new SlackClient();
      client.send(message);
    }
  }

sunnymattas

  public static void main(String[] args) {
    String type = args[0];
    String message = args[1];
    Messenger messanger;
    if ("slack".equals(type)) {
      messanger = new Slack();
    } else if ("skype".equals(type)) {
      messanger = new Skype();
    } else if ("hangout".equals(type)) {
      messanger = new Hangout();

sunnymattas

  public static void main(String[] args) {
    String type = args[0];
    String message = args[1];
    if ("slack".equals(type) && isValidForSlack(message)) {
      Slack slack = new Slack();
      slack.send(message);
    } else if ("skype".equals(type) && isValidForSkype(message)) {
      Skype skype = new Skype();
      skype.send(message);
    } else if ("hangout".equals(type) && isValidForHangout(message)) {