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public class Map { private Hashmap<String, City> cities; public Distance getDistance(CityA,CityB) // Returns distance between two cities public List<City> getCitiesInRadius(CityA, Distance …

If you're attempting to cache static web pages, then using nginx or Apache is the way to go. They'll server those files up faster then tomcat or jetty. Pages you generate once per startup, you shoul …

The only pattern I've seen, that works is "When the code gets to hard to figure out what's going on, it's time to stop using an anonymous class.". In your example, the method body is the anonymous cl …

I design my models so they don't easily get themselves into an invalid state to begin with. Then when my Interface (UI, or service), attempts to put it into such a state, an error is thrown which I c …

On create, I usually return the ID of the entity I just created. On an update, I return the object I just updated. Delete I usually don't return anything. In the case of create, the most interestin …