E - type of element in this setpublic class RemovableSingletonSet<E> extends AbstractSet<E>
Similar to Collections.singleton() but provides the ability to remove the single element and clear the set. Iterator supports remove() operations while maintaining singleton behavior.
Thread-safe implementation without synchronization overhead. Does not support add() or addAll() operations as they would violate the singleton contract. Item may not be null.
Useful for scenarios requiring a single, modifiable element with standard collection interface compliance and removal capabilities.
| Constructor and Description |
|---|
RemovableSingletonSet(E element) |
| Modifier and Type | Method and Description |
|---|---|
void |
clear() |
boolean |
contains(Object o) |
boolean |
isEmpty() |
Iterator<E> |
iterator() |
boolean |
remove(Object o) |
int |
size() |
equals, hashCode, removeAlladd, addAll, containsAll, retainAll, toArray, toArray, toStringclone, finalize, getClass, notify, notifyAll, wait, wait, waitadd, addAll, containsAll, retainAll, spliterator, toArray, toArrayparallelStream, removeIf, streampublic RemovableSingletonSet(E element)
public void clear()
clear in interface Collection<E>clear in interface Set<E>clear in class AbstractCollection<E>public boolean contains(Object o)
contains in interface Collection<E>contains in interface Set<E>contains in class AbstractCollection<E>public boolean isEmpty()
isEmpty in interface Collection<E>isEmpty in interface Set<E>isEmpty in class AbstractCollection<E>public boolean remove(Object o)
remove in interface Collection<E>remove in interface Set<E>remove in class AbstractCollection<E>public int size()
size in interface Collection<E>size in interface Set<E>size in class AbstractCollection<E>