import java.net.Socket;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
 
public class Estudiando {
 
    public static void main(String[]args){
      ExecutorService executor = Executors.newCachedThreadPool();
 
      int ini=1,fin=100;
      while(fin<=65500){
      executor.execute(new Run(ini,fin));
      fin+=100;
      ini+=100;
      }
      executor.execute(new Run(65501,65535));
 
        } 
 
    }
 
class Run implements Runnable{
    int puerto = 0;
    int fin;
    public Run(int port,int fin){
    puerto = port;
    this.fin=fin;
    }
 
    public void run(){
    Scanner Scanner = new Scanner(puerto,fin);
    }
}
 
 
class Scanner {
 
public Scanner(int puerto,int fin){
 
Socket dame;
String ip="localhost";
 
        for(int port =puerto;port<=fin;port++){
         try{
         dame = new Socket(ip,port);
 
         System.out.println("Puerto "+port+" Abierto");
         dame.close();
 
         }
         catch(Exception ex){}
 
      } 
   }
}