Method main

collectiontopics/FailFast.java:9–18

(String[] args)

public class FailFast {
  public static void main(String[] args) {
    Collection<String> c = new ArrayList<>();
    Iterator<String> it = c.iterator();
    c.add("An object");
    try {
      String s = it.next();
    } catch(ConcurrentModificationException e) {
      System.out.println(e);
    }
  }
}
/* Output:
java.util.ConcurrentModificationException