public final class ObjectObjectHashMap.KeysCollection extends AbstractObjectCollection<KType> implements ObjectLookupContainer<KType>
| Modifier and Type | Field and Description |
|---|---|
protected IteratorPool<ObjectCursor<KType>,ObjectObjectHashMap.KeysIterator> |
keyIteratorPool
internal pool of KeysIterator
|
containsNegateTestPredicate, containsTestPredicate, negatePredicate, testContainer, testPredicate| Constructor and Description |
|---|
KeysCollection() |
| Modifier and Type | Method and Description |
|---|---|
int |
capacity()
Return the maximum number of elements this container is guaranteed to hold without reallocating.
|
void |
clear()
Removes all elements from this collection.
|
boolean |
contains(KType e)
Lookup a given element in the container.
|
<T extends ObjectPredicate<? super KType>> |
forEach(T predicate)
Applies a
predicate to container elements, as long as the predicate
returns true. |
<T extends ObjectProcedure<? super KType>> |
forEach(T procedure)
Applies a
procedure to all container elements. |
ObjectObjectHashMap.KeysIterator |
iterator()
Returns an iterator to a cursor traversing the collection.
|
int |
removeAll(KType e)
Removes all occurrences of
e from this collection. |
int |
removeAll(ObjectPredicate<? super KType> predicate)
Removes all elements in this collection for which the
given predicate returns
true. |
int |
size()
Return the current number of elements in this container.
|
KType[] |
toArray(KType[] target)
Default implementation for:
Copies all elements of this container to an existing array of the same type.
|
isEmpty, removeAll, retainAll, retainAll, toArray, toArray, toStringclone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, waitisEmpty, toArray, toArrayprotected final IteratorPool<ObjectCursor<KType>,ObjectObjectHashMap.KeysIterator> keyIteratorPool
public boolean contains(KType e)
ObjectContainercontains in interface ObjectContainer<KType>contains in interface ObjectLookupContainer<KType>true if this container has an element
equal to e.public <T extends ObjectProcedure<? super KType>> T forEach(T procedure)
ObjectContainerprocedure to all container elements. Returns the argument (any
subclass of ObjectProcedure. This lets the caller to call methods of the argument
by chaining the call (even if the argument is an anonymous type) to retrieve computed values,
for example (IntContainer):
int count = container.forEach(new IntProcedure() {
int count; // this is a field declaration in an anonymous class.
public void apply(int value) { count++; }}).count;
forEach in interface ObjectContainer<KType>public <T extends ObjectPredicate<? super KType>> T forEach(T predicate)
ObjectContainerpredicate to container elements, as long as the predicate
returns true. The iteration is interrupted otherwise.forEach in interface ObjectContainer<KType>public ObjectObjectHashMap.KeysIterator iterator()
The iterator is implemented as a
cursor and it returns the same cursor instance on every call to
Iterator.next() (to avoid boxing of primitive types). To read the current
list's value (or index in the list) use the cursor's public fields. An example is
shown below.
for (ObjectCursor<Object> c : container) {
System.out.println("index=" + c.index + " value=" + c.value);
}
iterator in interface ObjectContainer<KType>iterator in interface java.lang.Iterable<ObjectCursor<KType>>public int size()
O(n) time, although implementing classes
should try to maintain the current size and return in constant time.size in interface ObjectContainer<KType>public int capacity()
O(n) time.capacity in interface ObjectContainer<KType>public void clear()
ObjectCollectionclear in interface ObjectCollection<KType>public int removeAll(ObjectPredicate<? super KType> predicate)
ObjectCollectiontrue.removeAll in interface ObjectCollection<KType>public int removeAll(KType e)
ObjectCollectione from this collection.removeAll in interface ObjectCollection<KType>e - Element to be removed from this collection, if present.public KType[] toArray(KType[] target)
AbstractObjectCollectiontoArray in interface ObjectContainer<KType>toArray in class AbstractObjectCollection<KType>target - The target array must be large enough to hold all elements, i.e >= ObjectContainer.size().Copyright © 2017. All rights reserved.