Look for qualified this usages in the same class.

Examples:

    Negative example:
    List originList = new ArrayList();
    originList.add("22");
    for (String item : originList) {
      //warn
      list.add("bb");
    }

    Positive example:
    Iterator it=b.iterator();
    while(it.hasNext()){
    Integer temp =  it.next();
        if (delCondition) {
          it.remove();
        }
    }