Miscellany

class City {   private String name;         public City(String name){      this.name = name;   }      public getName(){      return this.name;   }}class Link {   private City cityA;   private City cityB;   private int weight;   private boolean isRail;      public Link(City a, City b, int weight, boolean isRail){      }      public City getCityA(){      }      public City getCityB(){      }      public boolean isCityInLink(City city){      boolean foundCity = false;      if((cityA == city) || (cityB == city)){         foundCity = true;      }      return foundCity;   }   }class TransportNet{   private List<Link> links = new ArrayList<Link>();   private List<City> cities = new ArrayList<City>();      public TransportNet(){      //add cities      cities.add(new City("Sydney"));      cities.add(new City("Melbourne"));      cities.add(new City("London"));      cities.add(new City("Venice"));            //add links      addLink("Sydney", "Melbourne", 10, false);      addLink("Sydney", "Melbourne", 12, true);      addLink("Sydney", "Venice", 45345, false);         }      private addLink(String city1, String city2, int weight, boolean isRail){      City a = getCitybyName(city1);      City b = getCitybyName(city1);            links.add(new Link(a, b, weight, isRail);   }      public getCitybyName(String name){      }      public List<City> getCities(){      return cities;   }      public getLinks(City cityA){      List<Link> cityLinks = new ArrayList<Link>();      for(Link link : links){         if(link.isCityInLink(cityA)){            cityLinks.add(link);         }      }   }   }