Package org.miaixz.bus.core.center.map

Class FixedLinkedHashMap<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,V>

java.util.LinkedHashMap<K,V>

org.miaixz.bus.core.center.map.FixedLinkedHashMap<K,V>

Type Parameters:

K - 键类型

V - 值类型

All Implemented Interfaces:

Serializable, Cloneable, Map<K,V>, SequencedMap<K,V>

public class FixedLinkedHashMap<K,V>
extends LinkedHashMap<K,V>

固定大小的LinkedHashMap 实现 注意此类非线程安全，由于LinkedHashMap.get(Object)操作会修改链表的顺序结构，因此也不可以使用读写锁。

Since:

Java 17+

Author:

Kimi Liu

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

Constructor Summary

Constructors

Constructor	Description
FixedLinkedHashMap(int capacity)	构造

Method Summary

Modifier and Type	Method	Description
int	getCapacity()	获取容量
protected boolean	removeEldestEntry(Map.Entry<K,V> eldest)
void	setCapacity(int capacity)	设置容量
void	setRemoveListener(Consumer<Map.Entry<K,V>> removeListener)	设置自定义移除监听

Methods inherited from class java.util.LinkedHashMap

clear, containsValue, entrySet, forEach, get, getOrDefault, keySet, newLinkedHashMap, putFirst, putLast, replaceAll, reversed, sequencedEntrySet, sequencedKeySet, sequencedValues, values

Methods inherited from class java.util.HashMap

clone, compute, computeIfAbsent, computeIfPresent, containsKey, isEmpty, merge, newHashMap, put, putAll, putIfAbsent, remove, remove, replace, replace, size

Methods inherited from class java.util.AbstractMap

equals, hashCode, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, containsKey, equals, hashCode, isEmpty, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, size

Methods inherited from interface java.util.SequencedMap

firstEntry, lastEntry, pollFirstEntry, pollLastEntry

Constructor Details

FixedLinkedHashMap

public FixedLinkedHashMap(int capacity)

构造

Parameters:

capacity - 容量，实际初始容量比容量大1

Method Details

getCapacity

public int getCapacity()

获取容量

Returns:

容量

setCapacity

public void setCapacity(int capacity)

设置容量

Parameters:

capacity - 容量

setRemoveListener

public void setRemoveListener(Consumer<Map.Entry<K,V>> removeListener)

设置自定义移除监听

Parameters:

removeListener - 移除监听

removeEldestEntry

protected boolean removeEldestEntry(Map.Entry<K,V> eldest)

Overrides:

removeEldestEntry in class LinkedHashMap<K,V>