public abstract class ForwardingSet<E> extends ForwardingCollection<E> implements java.util.Set<E>
Warning: The methods of ForwardingSet forward indiscriminately to the
methods of the delegate. For example, overriding ForwardingCollection.add(E) alone will not change the
behavior of ForwardingCollection.addAll(java.util.Collection<? extends E>), which can lead to unexpected behavior. In this case, you should
override addAll as well, either providing your own implementation, or delegating to the
provided standardAddAll method.
default method warning: This class does not forward calls to default methods. Instead, it inherits their default implementations. When those implementations
invoke methods, they invoke methods on the ForwardingSet.
The standard methods are not guaranteed to be thread-safe, even when all of the
methods that they depend on are thread-safe.
| Modifier | Constructor and Description |
|---|---|
protected |
ForwardingSet()
Constructor for use by subclasses.
|
| Modifier and Type | Method and Description |
|---|---|
protected abstract java.util.Set<E> |
delegate()
Returns the backing delegate instance that methods are forwarded to.
|
boolean |
equals(java.lang.Object object) |
int |
hashCode() |
protected boolean |
standardEquals(java.lang.Object object)
A sensible definition of
equals(java.lang.Object) in terms of ForwardingCollection.size() and ForwardingCollection.containsAll(java.util.Collection<?>). |
protected int |
standardHashCode()
A sensible definition of
hashCode() in terms of ForwardingCollection.iterator(). |
protected boolean |
standardRemoveAll(java.util.Collection<?> collection)
A sensible definition of
ForwardingCollection.removeAll(java.util.Collection<?>) in terms of ForwardingCollection.iterator() and ForwardingCollection.remove(java.lang.Object). |
add, addAll, clear, contains, containsAll, isEmpty, iterator, remove, removeAll, retainAll, size, standardAddAll, standardClear, standardContains, standardContainsAll, standardIsEmpty, standardRemove, standardRetainAll, standardToArray, standardToArray, standardToString, toArray, toArraytoStringclone, finalize, getClass, notify, notifyAll, wait, wait, waitprotected abstract java.util.Set<E> delegate()
ForwardingObjectdelegate(). Concrete subclasses override this method to supply the
instance being decorated.delegate in class ForwardingCollection<E>public boolean equals(@CheckForNull
java.lang.Object object)
public int hashCode()
protected boolean standardRemoveAll(java.util.Collection<?> collection)
ForwardingCollection.removeAll(java.util.Collection<?>) in terms of ForwardingCollection.iterator() and ForwardingCollection.remove(java.lang.Object).
If you override iterator or remove, you may wish to override ForwardingCollection.removeAll(java.util.Collection<?>)
to forward to this implementation.standardRemoveAll in class ForwardingCollection<E>ForwardingCollection version as of 12.0)protected boolean standardEquals(@CheckForNull
java.lang.Object object)
equals(java.lang.Object) in terms of ForwardingCollection.size() and ForwardingCollection.containsAll(java.util.Collection<?>). If
you override either of those methods, you may wish to override equals(java.lang.Object) to forward to
this implementation.protected int standardHashCode()
hashCode() in terms of ForwardingCollection.iterator(). If you override
ForwardingCollection.iterator(), you may wish to override equals(java.lang.Object) to forward to this implementation.