Replace switch statements using lamda's

Complex switch statements with many possible cases tend to result in cluttered code. When code checkers start to complain about the complexity of a method, it becomes time to refactor that piece, but often that sounds simpler than it actually is.
With lambda's in java 8 these switch statements can easily be simplified resulting in cleaner, easier to read and extend code.
Lets take for example the below switch statement and turn that into a nice and easy to understand piece of code using a Map and some lamba expressions.

public List<string> findUsingSwitch(Bicycle bicycle) {
  switch (bicycle) {
    case RACE:
      return listRacers();
    case ATB:
      return listAtbs();
    case CITY:
      return listCityBikes();
    case HPV:
      return listHumanPoweredVehicles();
    default:
      throw new IllegalArgumentException();
    }
}

Its easy to imagine that such a switch statement can grow and become pretty complex.
In java 8 we now have the ability to use lambda expressions and pass them around to functions. This allows us to replace the switch/case block with a more flexible and more natural implementation.
Lets first start with creating a map that associates the enum with the lambda that produces the result for the given enum value.

private Map<Bicycle, Supplier<List<String>>> typeMap = new HashMap<Bicycle, Supplier<List<String>>>() {
  {
    put(Bicycle.RACE, () -> listRacers());
    put(Bicycle.ATB, () -> listAtbs());
    put(Bicycle.CITY, () -> listCityBikes());
    put(Bicycle.HPV, () -> listHumanPoweredVehicles());
  }
};

Now the find method can be changed to use the lambdas instead:

public List findUsingLambdas(Bicycle bicycle) {
  if (!typeMap.containsKey(bicycle)) {
    throw new IllegalArgumentException(String.format("%s is not supported", bicycle));
  }

  return typeMap.get(bicycle).get();
}

The example sources can be found on github