Syntax error Get navigable key set in java from NavigableMap

Get navigable key set in java from NavigableMap

The navigableKeySet() method is used to get view of the Map from NavigableMap.

Let us first create a NavigableMap

NavigableMap<String, Integer> n = new TreeMap<String, Integer>();

Add some elements in the NavigableMap

n.put("A", 498);
n.put("B", 389);
n.put("C", 868);
n.put("D", 988);
n.put("E", 686);
n.put("F", 888);
n.put("G", 999);
n.put("H", 444);
n.put("I", 555);
n.put("J", 666);

Get Navigable Key Set now

n.navigableKeySet()

The following is an example to get navigable key set

Example

 Live Demo

import java.util.ArrayList;
import java.util.*;
public class Demo {
   public static void main(String[] args) {
      NavigableMap<String, Integer> n =
      new TreeMap<String, Integer>();
      n.put("A", 498);
      n.put("B", 389);
      n.put("C", 868);
      n.put("D", 988);
      n.put("E", 686);
      n.put("F", 888);
      n.put("G", 999);
      n.put("H", 444);
      n.put("I", 555);
      n.put("J", 666);
      System.out.println("NavigableMap elements...\n"+n);
      System.out.println("Navigable Key Set = "+n.navigableKeySet());
   }
}

Output

NavigableMap elements...
{A=498, B=389, C=868, D=988, E=686, F=888, G=999, H=444, I=555, J=666}
Navigable Key Set = [A, B, C, D, E, F, G, H, I, J]
Updated on: 2019-07-30T22:30:24+05:30

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