How many elements will the map from the sample below have?
public class IdentityHashMapDemo {
public static void main(String[] args) {
Person james = new Person("James Gosling", 1955);
Person guido = new Person("Guido van Rossum", 1956);
Map<Person, String> map = new IdentityHashMap<>();
map.put(james, "Java");
map.put(new Person("James Gosling", 1955), "Java");
map.put(guido, "Python");
}
}