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Retrieving Elements from Collection in Java- Iterator
Following is an example to retrieve elements −
Example
import java.util.*;
public class Demo {
public static void main(String args[]) {
HashSet<String> my_hs = new HashSet<String>() ;
my_hs.add("Joe");
my_hs.add ("Rob");
Iterator my_it = my_hs.iterator();
System.out.println("The elements are : ");
while (my_it.hasNext())
System.out.println(my_it.next());
}
}Output
The elements are : Joe Rob
A class named Demo contains the main function, which defines a HashSet collection. Elements are added to this collection using the ‘add’ function. An iterator is defined, and the elements are iterated over by checking if there is a next element with the help of the ‘hasNext’ function. The elements are displayed on the screen.
Updated on: 14-Sep-2020
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