Get higher key from NavigableMap in Java

Java 8Object Oriented ProgrammingProgramming

Getting higher key means to return the least key strictly greater than the given key. This is done using higherKey() method in Java.

The following is an example.

Example

 Live Demo

import java.util.*;
public class Demo {
   public static void main(String[] args) {
      NavigableMap<Integer, String> n = new TreeMap<Integer, String>();
      n.put(5, "Tom");
      n.put(9, "John");
      n.put(14, "Jamie");
      n.put(1, "Tim");
      n.put(4, "Jackie");
      n.put(15, "Kurt");
      n.put(19, "Tiger");
      n.put(24, "Jacob");
      System.out.println("NavigableMap elements...\n"+n);
      System.out.println("Higher Key = "+n.higherKey(15));
   }
}

Output

NavigableMap elements...
{1=Tim, 4=Jackie, 5=Tom, 9=John, 14=Jamie, 15=Kurt, 19=Tiger, 24=Jacob}
Higher Key = 19
raja
Published on 30-Jan-2019 10:07:34
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