Package org.aoju.bus.core.lock

Class MapWithLock<K,V>

java.lang.Object

org.aoju.bus.core.lock.ObjectWithLock<Map<K,V>>

org.aoju.bus.core.lock.MapWithLock<K,V>

Type Parameters:

K - 键类型

V - 值类型

All Implemented Interfaces:

Serializable

public class MapWithLock<K,V>
extends ObjectWithLock<Map<K,V>>

Map对象读写锁

Since:

Java 17+

Author:

Kimi Liu

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
MapWithLock()	构造对象
MapWithLock(int initCapacity)	构造对象
MapWithLock(Map<K,V> map)	构造对象
MapWithLock(Map<K,V> map, ReentrantReadWriteLock lock)	构造对象

Method Summary

Modifier and Type	Method	Description
void	clear()	清空
Map<K,V>	copy()	复制对象
V	get(K key)	获取对象
V	put(K key, V value)
void	putAll(Map<K,V> map)	添加对象
V	putIfAbsent(K key, V value)	如果key值已经存在，则不会把新value put进去 如果key值不存在，此方法同put(key, value)
V	remove(K key)	删除对象
int	size()	对象大小

Methods inherited from class org.aoju.bus.core.lock.ObjectWithLock

getLock, getObject, read, readLock, setObject, write, writeLock

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

MapWithLock

public MapWithLock()

构造对象

MapWithLock

public MapWithLock(int initCapacity)

构造对象

Parameters:

initCapacity - 大小

MapWithLock

public MapWithLock(Map<K,V> map)

构造对象

Parameters:

map - 对象

MapWithLock

public MapWithLock(Map<K,V> map,
 ReentrantReadWriteLock lock)

构造对象

Parameters:

map - 对象

lock - 锁

Method Details

put

public V put(K key,
 V value)

Parameters:

key - 键信息

value - 值信息

Returns:

对象

putIfAbsent

public V putIfAbsent(K key,
 V value)

如果key值已经存在，则不会把新value put进去 如果key值不存在，此方法同put(key, value)

Parameters:

key - 键信息

value - 值信息

Returns:

对象

putAll

public void putAll(Map<K,V> map)

添加对象

Parameters:

map - 对象

clear

public void clear()

清空

remove

public V remove(K key)

删除对象

Parameters:

key - 键信息

Returns:

the true/false

get

public V get(K key)

获取对象

Parameters:

key - 键信息

Returns:

返回对象

size

public int size()

对象大小

Returns:

the int

copy

public Map<K,V> copy()

复制对象

Returns:

如果没值，则返回null，否则返回一个新map