SortedMap entrySet() method in Java with Examples

The entrySet() method of SortedMap interface in Java is used to create a set out of the same elements contained in the map. It basically returns a set view of the map or creates a new set and store the map elements into them.

Syntax:

SortedMap.entrySet()

Parameters: The method does not take any parameter.

Return Value: The method returns a set having same elements as the map.

Below programs are used to illustrate the working of above method:



Program 1: Using HashMap.

filter_none

edit
close

play_arrow

link
brightness_4
code

// Java code to illustrate the entrySet() method
  
import java.util.*;
  
public class SortedMap_Demo {
    public static void main(String[] args)
    {
  
        // Creating an empty TreeMap
        SortedMap<String, Integer>
            sotree_map = new TreeMap<String,
                                     Integer>();
  
        // Mapping int values to string keys
        sotree_map.put("Geeks", 10);
        sotree_map.put("4", 15);
        sotree_map.put("Geeks", 20);
        sotree_map.put("Welcomes", 25);
        sotree_map.put("You", 30);
  
        // Displaying the TreeMap
        System.out.println("Initial Mappings are: "
                           + sotree_map);
  
        // Using entrySet() to get the set view
        System.out.println("The set is: "
                           + sotree_map.entrySet());
    }
}

chevron_right


Program 2:

filter_none

edit
close

play_arrow

link
brightness_4
code

// Java code to illustrate the entrySet() method
  
import java.util.*;
  
public class SortedMap_Demo {
    public static void main(String[] args)
    {
  
        // Creating an empty TreeMap
        SortedMap<Integer, String>
            sotree_map = new TreeMap<Integer,
                                     String>();
  
        // Mapping string values to int keys
        sotree_map.put(10, "Geeks");
        sotree_map.put(15, "4");
        sotree_map.put(20, "Geeks");
        sotree_map.put(25, "Welcomes");
        sotree_map.put(30, "You");
  
        // Displaying the TreeMap
        System.out.println("Initial Mappings are: "
                           + sotree_map);
  
        // Using entrySet() to get the set view
        System.out.println("The set is: "
                           + sotree_map.entrySet());
    }
}

chevron_right


Note: The same operation can be performed with any type of Mappings with variation and combination of different data types.

Attention reader! Don’t stop learning now. Get hold of all the important Java and Collections concepts with the Fundamentals of Java and Java Collections Course at a student-friendly price and become industry ready.




My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.