com.google.common.collect
Class ForwardingMap.StandardKeySet
java.lang.Object
java.util.AbstractCollection<E>
java.util.AbstractSet<K>
com.google.common.collect.ForwardingMap.StandardKeySet
- All Implemented Interfaces:
- java.lang.Iterable<K>, java.util.Collection<K>, java.util.Set<K>
- Enclosing class:
- ForwardingMap<K,V>
@Beta
protected class ForwardingMap.StandardKeySet
- extends java.util.AbstractSet<K>
A sensible implementation of Map.keySet()
in terms of the following
methods: ForwardingMap.clear()
, ForwardingMap.containsKey(java.lang.Object)
,
ForwardingMap.isEmpty()
, ForwardingMap.remove(java.lang.Object)
, ForwardingMap.size()
, and the Set.iterator()
method of ForwardingMap.entrySet()
. In many cases, you may wish to override ForwardingMap.keySet()
to forward to this implementation or a subclass
thereof.
- Since:
- 10.0
Methods inherited from class java.util.AbstractSet |
equals, hashCode |
Methods inherited from class java.util.AbstractCollection |
add, addAll, containsAll, retainAll, toArray, toArray, toString |
Methods inherited from class java.lang.Object |
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Methods inherited from interface java.util.Set |
add, addAll, containsAll, retainAll, toArray, toArray |
ForwardingMap.StandardKeySet
public ForwardingMap.StandardKeySet()
iterator
public java.util.Iterator<K> iterator()
- Specified by:
iterator
in interface java.lang.Iterable<K>
- Specified by:
iterator
in interface java.util.Collection<K>
- Specified by:
iterator
in interface java.util.Set<K>
- Specified by:
iterator
in class java.util.AbstractCollection<K>
size
public int size()
- Specified by:
size
in interface java.util.Collection<K>
- Specified by:
size
in interface java.util.Set<K>
- Specified by:
size
in class java.util.AbstractCollection<K>
isEmpty
public boolean isEmpty()
- Specified by:
isEmpty
in interface java.util.Collection<K>
- Specified by:
isEmpty
in interface java.util.Set<K>
- Overrides:
isEmpty
in class java.util.AbstractCollection<K>
contains
public boolean contains(java.lang.Object o)
- Specified by:
contains
in interface java.util.Collection<K>
- Specified by:
contains
in interface java.util.Set<K>
- Overrides:
contains
in class java.util.AbstractCollection<K>
remove
public boolean remove(java.lang.Object o)
- Specified by:
remove
in interface java.util.Collection<K>
- Specified by:
remove
in interface java.util.Set<K>
- Overrides:
remove
in class java.util.AbstractCollection<K>
removeAll
public boolean removeAll(java.util.Collection<?> c)
- Specified by:
removeAll
in interface java.util.Collection<K>
- Specified by:
removeAll
in interface java.util.Set<K>
- Overrides:
removeAll
in class java.util.AbstractSet<K>
clear
public void clear()
- Specified by:
clear
in interface java.util.Collection<K>
- Specified by:
clear
in interface java.util.Set<K>
- Overrides:
clear
in class java.util.AbstractCollection<K>