TreeSet:
TreeSet extends AbstractSet and implements the NavigableSet interface. It maintains ascending order for its elements i.e. elements will be in sorted form.
TreeSet example:
TreeSetTest.java
import java.util.Iterator; import java.util.Set; import java.util.TreeSet; /** * This class is used to show the TreeSet functionality. * @author w3spoint */ public class TreeSetTest { public static void main(String args[]){ //Create TreeSet object. Set treeSet = new TreeSet(); //Add objects to the HashSet. treeSet.add("Roxy"); treeSet.add("Sunil"); treeSet.add("Sandy"); treeSet.add("Munish"); treeSet.add("Pardeep"); //Print the TreeSet object. System.out.println("TreeSet elements:"); System.out.println(treeSet); //Print the TreeSet elements using iterator. Iterator iterator=treeSet.iterator(); System.out.println("TreeSet elements using iterator:"); while(iterator.hasNext()){ System.out.println(iterator.next()); } } } |
Output:
TreeSet elements: [Munish, Pardeep, Roxy, Sandy, Sunil] TreeSet elements using iterator: Munish Pardeep Roxy Sandy Sunil |
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