Skip to content
Related Articles

Related Articles

Improve Article
Save Article
Like Article

SortedMap entrySet() method in Java with Examples

  • Last Updated : 26 Nov, 2018

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:

Attention reader! Don’t stop learning now. Get hold of all the important Java Foundation and Collections concepts with the Fundamentals of Java and Java Collections Course at a student-friendly price and become industry ready. To complete your preparation from learning a language to DS Algo and many more,  please refer Complete Interview Preparation Course.

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.




// 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());
    }
}

Program 2:




// 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());
    }
}

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




My Personal Notes arrow_drop_up
Recommended Articles
Page :