Q45

Given :

import java.util.List;

import java.util.concurrent.CopyOnWriteArrayList;

public class CowArray extends Thread {

     static List<Integer> myList = new CopyOnWriteArrayList<Integer>();

     public static void main(String[] args) {

          myList.add(11);

          myList.add(22);

          myList.add(33);

          myList.add(44);

          new CowArray().start();

          for (Integer i : myList) {

                try {

                     Thread.sleep(1000);

                }

                catch (Exception e) {

                     System.out.print("e1 ");

                }

                System.out.print(" " + i);

          }

     }

     public void run() {

          try {

                Thread.sleep(500);

          }

          catch (Exception e) {

                System.out.print("e2 ");

          }

          myList.add(77);

          System.out.print("size: " + myList.size() + ", elements:");

     }

}

What is the most likely result?

A.
size: 4, elements: 11 22 33 44

B.
size: 5, elements: 11 22 33 44

C.
size: 4, elements: 11 22 33 44 77

D.
size: 5, elements: 11 22 33 44 77

E.
a ConcurrentModification Exception is thrown

Risposta B