import org.neo4j.collection.primitive.PrimitiveLongObjectMap; public class CollectionExample { public static void main(String[] args) { PrimitiveLongObjectMap<String> map = new PrimitiveLongObjectMap<>(); map.put(1L, "Neo"); map.put(2L, "Trinity"); map.put(3L, "Morpheus"); String value = map.get(2L); System.out.println("Value: " + value); map.forEach((key, val) -> System.out.println("Key: " + key + ", Value: " + val)); } }