Set iterator() method in Java with Examples

The java.util.Set.iterator() method is used to return an iterator of the same elements as the set. The elements are returned in random order from what present in the set.

Syntax:

Iterator iterate_value = Set.iterator();

Parameters: The function does not take any parameter.



Return Value: The method iterates over the elements of the set and returns the values(iterators).

Below program illustrate the java.util.Set.iterator() method:

filter_none

edit
close

play_arrow

link
brightness_4
code

// Java code to illustrate iterator()
  
import java.util.*;
  
public class SetDemo {
    public static void main(String args[])
    {
        // Creating an empty Set
        Set<String> set = new HashSet<String>();
  
        // Use add() method to add elements into the Set
        set.add("Welcome");
        set.add("To");
        set.add("Geeks");
        set.add("4");
        set.add("Geeks");
  
        // Displaying the Set
        System.out.println("Set: " + set);
  
        // Creating an iterator
        Iterator value = set.iterator();
  
        // Displaying the values after iterating through the iterator
        System.out.println("The iterator values are: ");
        while (value.hasNext()) {
            System.out.println(value.next());
        }
    }
}

chevron_right






                        filter_none









Output:


Set: [4, Geeks, Welcome, To]
The iterator values are: 
4
Geeks
Welcome
To





Reference: https://docs.oracle.com/javase/7/docs/api/java/util/Set.html#iterator()



          
          
          
          

            

    

        My Personal Notes
        arrow_drop_up
    

    

        
        

            
            
        

    


Recommended Posts:
gopaldave
The function of education is to teach one to think intensively and to think critically
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.