Java Collection Tutorial - Java NavigableMap.headMap(K toKey, boolean inclusive)

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Syntax

NavigableMap.headMap(K toKey, boolean inclusive) has the following syntax.

NavigableMap < K , V > headMap(K toKey,   boolean inclusive)

Example

In the following code shows how to use NavigableMap.headMap(K toKey, boolean inclusive) method.

//from w  w w  . ja va 2  s .c  om

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.headMap(1,false) + "\n");


  }
}

The code above generates the following result.

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