The Predicates class is a collection of useful methods for working with Predicate instances. The Predicates class offers some very helpful methods that should be expected from working with Boolean conditions, chaining Predicate instances with "and" or "or" conditions, and providing a "not" that evaluates to true if the given Predicate instance evaluates to false and vice versa. There is also a Predicates.compose method, but it takes a Predicate instance and a Function object and returns Predicate that evaluates the output from the given Function object. Let's take a look at some examples so we can get a better understanding of how we can use Predicates in our code. Before we move on to look at specific examples, let's assume we have the following two instances of Predicates classes defined (in addition to
PopulationPredicate defined previously) for our City object:
public class TemperateClimatePredicate implements Predicate<City> {
@Override
public...