example ArrayList e TreeSet

gistheros

import java.util.List;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

public class HeroisCollection {
    public static void main(String[] args) {
	   List<String> nomeHerois = new ArrayList<String>();
	   nomeHerois.add("Peter Parker");
	   nomeHerois.add("Bruce Wayne");
	   nomeHerois.add("Bruce Banner");

	    for (String nome : nomeHerois) {
	       System.out.println(nome);
	    }

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

	    Set<String> herois = new HashSet<String>();
	    herois.add("Spider man");
	    herois.add("Batman");
	    herois.add("Hulk");

	    Iterator<String> heroi = herois.iterator();
	    while (heroi.hasNext()) {
	      System.out.println(heroi.next());
	    }

	  }
  
}