Collections - Beginning Java 8 Language Features - page 538

ns.add(3);
ns.add(4);
ns.add(5);
// Get a reverse view of the navigable set
NavigableSet reverseNs = ns.descendingSet();
// Print the normal and reverse views
System.out.println("Normal View of the Set: " + ns);
System.out.println("Reverse view of the set: " + reverseNs);
// Get and print a subset of the navigable set
System.out.println("\nGetting subset of the set");
NavigableSet threeOrMore = ns.tailSet(3, true);
System.out.println("3 or more: " + threeOrMore);
// Search the navigable set
System.out.println();
System.out.println("Searching through the set");
System.out.println("lower(3): " + ns.lower(3));
System.out.println("floor(3): " + ns.floor(3));
System.out.println("higher(3): " + ns.higher(3));
System.out.println("ceiling(3): " + ns.ceiling(3));
// Poll the navigable set
System.out.println();
System.out.println("Polling elements from the set");
// Poll elements one by one and look at the set
System.out.println("pollFirst(): " + ns.pollFirst());
System.out.println("Navigable Set: " + ns);
System.out.println("pollLast(): " + ns.pollLast());
System.out.println("Navigable Set: " + ns);
System.out.println("pollFirst(): " + ns.pollFirst());
System.out.println("Navigable Set: " + ns);
System.out.println("pollFirst(): " + ns.pollFirst());
System.out.println("Navigable Set: " + ns);
System.out.println("pollFirst(): " + ns.pollFirst());
System.out.println("Navigable Set: " + ns);
// Since the set is empty, polling will return null
System.out.println("pollFirst(): " + ns.pollFirst());
System.out.println("pollLast(): " + ns.pollLast());
}
}