Iterate a Collection and remove an item (Exception, wrong version) : Iterator « Collections « Java Tutorial

1. Java Tutorial
2. Collections
3. Iterator

import java.util.ArrayList;
import java.util.List;

public class Main {
  public static void main(String args[]) {
    List<String> list = new ArrayList<String>();

    list.add("A");
    list.add("B");
    list.add("C");
    list.add("C");
    list.add("C");
    list.add("C");
    list.add("C");
    

    for (String s : list) {
      if (s.equals("B")) {
        list.remove("B");
      }
      System.out.println(s);
    }
  }
}
/*A
B
Exception in thread "main" java.util.ConcurrentModificationException
  at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372)
  at java.util.AbstractList$Itr.next(AbstractList.java:343)
  at Main.main(Main.java:17)

*/