Java-最近被使用缓存（LRU）

import java.util.LinkedHashMap;
import java.util.Map;

public LRUCache<K, V> extends LinkedHashMap<K, V> {
private int cacheSize;

public LRUCache(int cacheSize) {
super(16, 0.75, true);
this.cacheSize = cacheSize;
}

protected boolean removeEldestEntry(Map.Entry<K, V> eldest) {
return size() >= cacheSize;
}
}