Java Collection Tutorial - Java NavigableMap.ceilingKey(K key)

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Syntax

NavigableMap.ceilingKey(K key) has the following syntax.

K ceilingKey(K key)

Example

In the following code shows how to use NavigableMap.ceilingKey(K key) method.

 /*  w  ww  .j  a  v  a2s . co  m*/
import java.util.NavigableMap;
import java.util.TreeMap;

public class Main {
  public static void main(String args[]) {
    
    NavigableMap<String, String> nav = new TreeMap<String, String>();
    nav.put("A", "a");
    nav.put("B", "b");
    nav.put("C", "c");
    nav.put("D", "d");
    nav.put("E", "e");
    nav.put("F", "f");
    System.out.println(nav);
    System.out.println(nav.ceilingKey("B"));
  }
}
  

The code above generates the following result.

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