/**
* Creates a shallow copy of this hashtable. All the structure of the hashtable itself is copied,
* but the keys and values are not cloned. This is a relatively expensive operation.
*
* @return a clone of the hashtable
*/
public synchronized Object clone() {
try {
Hashtable<?, ?> t = (Hashtable<?, ?>) super.clone();
t.table = new Entry<?, ?>[table.length];
for (int i = table.length; i-- > 0; ) {
t.table[i] = (table[i] != null) ? (Entry<?, ?>) table[i].clone() : null;
}
t.keySet = null;
t.entrySet = null;
t.values = null;
t.modCount = 0;
return t;
} catch (CloneNotSupportedException e) {
// this shouldn't happen, since we are Cloneable
throw new InternalError(e);
}
}
