import java.util.List;

class Comment {

}

class AnnotationExpr {

}

class ElementOfList {

    void foo() {
        List<Comment> comments = commentsCollection.getAll();
        Object a = comments.get(0);
    }

    void annotations() {
        List<AnnotationExpr> annotations = new LinkedList<AnnotationExpr>();
        Object a = annotations.get(annotations.size()-1);
    }

}