package tema3;

import java.util.Iterator;
import java.util.TreeSet;

public class EjemploStrings {

    /**
     * @param args
     */
    public static void main(String[] args) {
        
        String textoOriginal = "uno@hotmail.com;dos@gmail.com;tres@yahoo.es;" +
        		"cuatro@gmail.com;cinco@yahoo.com;seis@hotmail.com";
        
        TreeSet<String> domains = new TreeSet<String>();
        
        String[] emails = textoOriginal.split(";");
        
        for (int i=0;i<emails.length;i++){
            String email = emails[i];
            String[] emailParts = email.split("@");
            if (emailParts.length == 2){
                String userName = emailParts[0];
                String domainName = emailParts[1];
                domains.add(domainName);
            }
        }
        
        //recorremos y mostramos los dominios recogidos:
        Iterator<String> iteraDomains = domains.iterator();
        
        for(int i=1;iteraDomains.hasNext();i++){
            String domainName = iteraDomains.next();
            System.out.println(i + ": " + domainName);
        }

    }

}