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Set iterator() method in Java with Examples

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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:




// 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());
        }
    }
}


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()


Last Updated : 31 Dec, 2018
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