What will happen if you attempt to compile and run

What will happen if you attempt to compile and run the following code:


import java.util.*;
class Quizful {
  public static void main(String[] args) {
     List<String> arrayList = new ArrayList<String> (); 
     arrayList.add("One"); 
     arrayList.add("Two"); 
     arrayList.add("Three"); 
          
     for (Iterator<String> iter = arrayList.iterator(); iter.hasNext();) { 
         String current = iter.next(); 
         if (current.length() == 3) { 
             arrayList.remove(current); 
         } 
     } 
          
     for (String current:arrayList) 
         System.out.println(current); 
  }
}

Explanation

The list is modified directly while iterating over it is still in progress. The situation is treated as concurrent modification while such modification is not permissible.