org.ttzero.excel.reader

接口 Cache<K,V>

所有超级接口:

Iterable<Cache.Entry<K,V>>

所有已知实现类:

FixSizeLRUCache

public interface Cache<K,V>
extends Iterable<Cache.Entry<K,V>>

作者:

guanquan.wang at 2019-06-04 16:07

嵌套类概要

嵌套类

限定符和类型	接口和说明
static interface	Cache.Entry<K,V> A map entry (key-value pair)

方法概要

限定符和类型	方法和说明
void	clear() Removes all of the mappings from this cache (optional operation).
V	get(K k) Returns the value to which the specified key is mapped, or null if this cache contains no mapping for the key.
void	put(K k, V v) Associates the specified value with the specified key in this cache.
V	remove(K k) Removes the mapping for a key from this cache if it is present (optional operation).
int	size() Returns the number of key-value mappings in this cache.

从接口继承的方法 java.lang.Iterable

forEach, iterator, spliterator

方法详细资料

get

V get(K k)

Returns the value to which the specified key is mapped, or null if this cache contains no mapping for the key.

参数:

k - the key whose associated value is to be returned

返回:

the value to which the specified key is mapped, or null if this cache contains no mapping for the key

put

void put(K k,
         V v)

Associates the specified value with the specified key in this cache. If the cache previously contained a mapping for the key, the old value is replaced by the specified value.

参数:

k - key with which the specified value is to be associated the key must not be null

v - value to be associated with the specified key

remove

V remove(K k)

Removes the mapping for a key from this cache if it is present (optional operation). More formally, if this cache contains a mapping from key k to value v, that mapping is removed.

参数:

k - key whose mapping is to be removed from the cache

返回:

the previous value associated with key, or null if there was no mapping for key.

clear

void clear()

Removes all of the mappings from this cache (optional operation). The cache will be empty after this call returns.

size

int size()

Returns the number of key-value mappings in this cache.

返回:

the number of key-value mappings in this cache.