嵌套类引用实例化的外部类的方法

class:java.util.HashMap

line:814

HashMap.this.removeEntryForKey(k)

public class HashMap<K,V>
    extends AbstractMap<K,V>
    implements Map<K,V>, Cloneable, Serializable
{
    ...
    final Entry<K,V> removeEntryForKey(Object key) {...}
    private abstract class HashIterator<E> implements Iterator<E> {
        Entry<K,V> next;    // next entry to return
        int expectedModCount;    // For fast-fail
        int index;        // current slot
        Entry<K,V> current;    // current entry

        HashIterator() {...}

        public final boolean hasNext() {...}

        final Entry<K,V> nextEntry() {...}

        public void remove() {
            if (current == null)
                throw new IllegalStateException();
            if (modCount != expectedModCount)
                throw new ConcurrentModificationException();
            Object k = current.key;
            current = null;
            HashMap.this.removeEntryForKey(k);
            expectedModCount = modCount;
        }
    }
}