protected class OldCache.KeySet extends SafeHashMap.KeySet
Modifier | Constructor and Description |
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protected |
KeySet() |
Modifier and Type | Method and Description |
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int |
size()
Determine the number of keys in the Set.
|
Object[] |
toArray(Object[] ao)
Returns an array with a runtime type is that of the specified array and that contains all of the elements in this collection.
|
clear, contains, iterator, remove, toArray
equals, hashCode, removeAll
add, addAll, containsAll, isEmpty, retainAll, toString
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
add, addAll, containsAll, isEmpty, retainAll, spliterator
parallelStream, removeIf, stream
public Object[] toArray(Object[] ao)
If the collection fits in the specified array with room to spare (i.e., the array has more elements than the collection), the element in the array immediately following the end of the collection is set to null. This is useful in determining the length of the collection only if the caller knows that the collection does not contain any null elements.)
toArray
in interface Collection
toArray
in interface Set
toArray
in class SafeHashMap.KeySet
ao
- the array into which the elements of the collection are to be stored, if it is big enough; otherwise, a new array of the same runtime type is allocated for this purposeArrayStoreException
- if the runtime type of the specified array is not a supertype of the runtime type of every element in this collectionpublic int size()
size
in interface Collection
size
in interface Set
size
in class SafeHashMap.KeySet