expungeStaleEntries in WeakHashMap

In WeakHashMap.expungeStaleEntries method of JDK 1.5, I see following code:

e = (Entry<K,V>) queue.poll()

But while creating Entry, only key is added to WeakReference:

Entry(K key, V value, ReferenceQueue<K> queue, int hash, Entry<K,V> next) {

super(key, queue);

this.value = value;

this.hash = hash;

this.next = next;

}

So my question is: The WeakReference has only key, so how come on polling queue an object of type Entry is retrieved?

[531 byte] By [nishantagrawala] at [2007-11-27 9:32:58]