问声明Iterator<？扩展E& Comparable<？java中的超级E>>迭代器

EN

class NewIterator<E extends Comparable<? super E>> implements Iterator<E> {

NewIterator(Iterator<? extends E & Comparable<? super E>> iterator){
    ...
}

public NewIterator(Iterator<? extends E> iterator) {

}

class IntegerNumber {}

class PositiveNumber extends IntegerNumber implements Comparable<IntegerNumber> {}

class OddPositiveNumber extends PositiveNumber {}

private NewIterator<PositiveNumber> newIterator;
void foo() {
    Iterator<PositiveNumber> iterator = createIteratorFrom(
        new PositiveNumber(1),
        new OddPositiveNumber(7)
    );
    this.newIterator = new NewIterator(iterator);
}