import java.util.HashSet;
import java.util.Iterator;

public class Heroes {
    public static void main(String args[]) {
        java.util.Scanner input = new java.util.Scanner(System.in);
        
        java.util.Hashtable<String,String> heroes = new java.util.Hashtable<String,String>();
        heroes.put("Superman","Clark");
        heroes.put("Wonder Woman","Diana");
        heroes.put("Batman","Bruce");
        heroes.put("Batman","Stephen");
        heroes.put("Hulk","Bruce");

        HashSet<String> people = new HashSet<String>();

        people.add("Jerome");
        people.add("Aidan");
        people.add("Owen");
        people.add("Owen");
        people.add("Owen");
        people.add("Owen");
        people.add("Owen");
        Iterator<String> peoplenames = people.iterator();

        while (peoplenames.hasNext()) {
            String peep = peoplenames.next();
            System.out.println(peep + " is in the class!");
        }

        peoplenames = people.iterator();

        while (peoplenames.hasNext()) {
            String peep = peoplenames.next();
            System.out.println(peep + " is in the class!");
        }

        
        System.out.println("Is there an Owen? " + people.contains("Owen"));
        people.remove("Owen");
        System.out.println("Is there an Owen? " + people.contains("Owen"));
        System.out.println("Is there a Jar Jar Binks? " + people.contains("Jar Jar Binks"));

        String daman = heroes.get("Superman");

        Iterator<String> names = heroes.keySet().iterator();
        while (names.hasNext()) {
            String name = names.next();
            System.out.println(name + " is really " + heroes.get(name));
            
        }
    }
}