JavaMadeSoEasy.com (JMSE): TreeSet - iterate using iterator, listIterator, Enumeration and enhanced for loop

TreeSet - iterate using iterator, listIterator, Enumeration and enhanced for loop.

import java.util.Collections;

import java.util.Enumeration;

import java.util.Iterator;

import java.util.Set;

import java.util.TreeSet;

/** Copyright (c), AnkitMittal JavaMadeSoEasy.com */

public class TreeSetTest {

public static void main(String args[]) {

Set<String> treeSet=new TreeSet<String>();

treeSet.add("javaMadeSoEasy");

treeSet.add("ankit");

System.out.println("-------use iterator-------");

Iterator<String> iterator=treeSet.iterator();

while(iterator.hasNext()){

System.out.println(iterator.next());

}

System.out.println("-------use Enumeration-------");

Enumeration<String> listEnum=Collections.enumeration(treeSet);

while(listEnum.hasMoreElements()){

System.out.println(listEnum.nextElement());

}

System.out.println("-------use enhanced for loop-------");

for(String string:treeSet){

System.out.println(string);

}

/*OUTPUT

-------use iterator-------

ankit

javaMadeSoEasy

-------use Enumeration-------

ankit

javaMadeSoEasy

-------use enhanced for loop-------

ankit

javaMadeSoEasy