content: /*
   * Copyright 2016-2020 Andres Almiray
   *
   * This file is part of Java Trove Examples
   *
   * Java Trove Examples is free software: you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation, either version 3 of the License, or
   * (at your option) any later version.
   *
   * Java Trove Examples is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with Java Trove Examples. If not, see <http://www.gnu.org/licenses/>.
   */
  package org.kordamp.javatrove.hello.pmvc.service;
  
  import javax.annotation.Nonnull;
  import javax.annotation.Nullable;
  
  /**
   * @author Andres Almiray
   */
  public class DefaultHelloService implements HelloService {
      @Nonnull
      public String sayHello(@Nullable String input) {
          if (input == null || input.isEmpty()) {
              return "Howdy stranger!";
          } else {
              return "Hello " + input;
          }
      }
  }