Java Collection Tutorial - Java NavigableMap .descendingKeySet ()


NavigableMap.descendingKeySet() has the following syntax.

NavigableSet < K > descendingKeySet()


In the following code shows how to use NavigableMap.descendingKeySet() method.

/* www. j a v  a 2 s .c o m*/

import java.util.NavigableMap;
import java.util.TreeMap;

public class Main {
  public static void main(String[] args) {
    NavigableMap<Integer, String> map = new TreeMap<Integer, String>();
    map.put(2, "two");
    map.put(1, "one");
    map.put(3, "three");
    System.out.println( map.descendingKeySet() + "\n");


The code above generates the following result.