java.util
Class HashSet<E>
E - element type.public class HashSet<E> extends AbstractSet<E> implements Set<E>, Cloneable, Serializable
| Modifier | Constructor and Description |
|---|---|
|
HashSet() |
|
HashSet(Collection<? extends E> c) |
protected |
HashSet(HashMap<E,Object> map)
Protected constructor to specify the underlying map.
|
|
HashSet(int initialCapacity) |
|
HashSet(int initialCapacity,
float loadFactor) |
| Modifier and Type | Method and Description |
|---|---|
boolean |
add(E o) |
void |
clear() |
Object |
clone() |
boolean |
contains(Object o) |
boolean |
isEmpty() |
Iterator<E> |
iterator() |
boolean |
remove(Object o) |
int |
size() |
String |
toString() |
equals, hashCode, removeAlladdAll, containsAll, retainAll, toArray, toArraypublic HashSet()
public HashSet(Collection<? extends E> c)
public HashSet(int initialCapacity)
public HashSet(int initialCapacity,
float loadFactor)
public boolean add(E o)
add in interface Collection<E>add in interface Set<E>add in class AbstractCollection<E>public void clear()
clear in interface Collection<E>clear in interface Set<E>clear in class AbstractCollection<E>public Object clone()
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>public String toString()
toString in class AbstractCollection<E>Copyright © 2018. All rights reserved.