Java Collection Tutorial - Java SortedMap.keySet()

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Syntax

SortedMap.keySet() has the following syntax.

Set < K > keySet()

Example

In the following code shows how to use SortedMap.keySet() method.

import java.util.SortedMap;
import java.util.TreeMap;
// ww  w . ja  v a  2  s .c  om
public class Main {
  public static void main(String[] args) {
    SortedMap<String, Integer> sortedMap = new TreeMap<String, Integer>();
    sortedMap.put("A", 1);
    sortedMap.put("B", 2);
    sortedMap.put("C", 3);
    sortedMap.put("D", 4);
    sortedMap.put("E", 5);
    sortedMap.put("java2s", 6);
      
    System.out.println(sortedMap.keySet());

  }
}

The code above generates the following result.

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