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Java Set iterator with example

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In this tutorial we will see how to use the Java iterator with Set interface . We will create an example to display the contents of the set collection.

  • Java Set Interface keeps the data without duplicate value.
  • Its one subtype Treeset always returns sorted data.
  • But the subtype HashSet doesnot return sorted data.
  • It uses iterator() method to traverse the data


Example of Java Set Iterator
import java.util.*;
public class setiterator {

	public static void main(String[] args) {
		Set s = new TreeSet();
		s.add(1000);
		s.add(400);
		s.add(900);
		s.add(700);
		s.add(400);
		Iterator it = s.iterator();
		while (it.hasNext()) {
			System.out.println(it.next());
		} 
	}
}

Output

400 700 900 1000

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Posted on: November 3, 2009 If you enjoyed this post then why not add us on Google+? Add us to your Circles

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