I am working on a project which will read data into a list. I have a question in the for loop. How does the Feature city : cities work? I understand that cities is the list, but what does city means? city is not predefined, how does java understand city?
List<Feature> cities = GeoJSONReader.loadData(this, cityFile);
cityMarkers = new ArrayList<Marker>();
for(Feature city : cities) {
cityMarkers.add(new CityMarker(city));
}
This is a for each loop.what it does is this: For each city in you city list it show perform what ever that is within the cury brace.the city is each city as you iterate over your city list
The compiler translates this into something that makes more sense. It probably comes out to something like:
ListIterator<Feature> cityIterator = cities.listIterator();
while(cityIterator.hasNext()) {
cityMarkers.add(new CityMarker(cityIterator.next());
}
The enhanced for loop syntax using : just makes it easier to write and read the above code.
In the loop your are doing a iteration on cities. city is a element of your list citie. In each iteration, the current element of the list is city.
