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()