Example of headSet() method of navigableSet in java.

Example of headSet() method of navigableSet in java.

The headSet() in a method of java navigableSet. It returns a set of element. It holds all the element, that is less than or equal to the given element.

Code:

ExampleOfHeadSet.java

import java.util.Iterator;
import java.util.NavigableSet;
import java.util.SortedSet;
import java.util.TreeSet;

public class ExampleOfHeadSet {
public static void main(String[] args) {
	NavigableSet obSet = new TreeSet();
	obSet.add(2);
	obSet.add(3);
	obSet.add(4);
	obSet.add(5);
	obSet.add(6);
	obSet.add(7);
	obSet.add(8);
	Iterator obIterator = obSet.iterator();
	System.out.println("Elements of navigableset.");
	while (obIterator.hasNext()) {
		System.out.print(obIterator.next() + " ");
	}
	SortedSet oSortedSet = obSet.headSet(6);
	Iterator headSetIterator = oSortedSet.iterator();
	System.out.println("\nElement in another set.");
	while (headSetIterator.hasNext()) {
		System.out.print(headSetIterator.next() + " ");
	}
  }
}