* Returns {@codetrue}ifthisset contains the specified element.* More formally, returns {@codetrue}ifand onlyifthisset*contains an element {@code e} such that* (o==null? e==null: o.equals(e)).* * @param o element whose presence inthisset is to be tested* @return{@codetrue}ifthi...
看了下CopyOnWriteSet源码,底层使用的是CopyOnWriteList,根据底层的实现,每次读取都是N的复杂度.每次写也是N的复杂度.有个代码可以看一下, 来自CopyOnWriteList publicboolean addIfAbsent(E e) { Object[] snapshot=getArray();returnindexOf(e, snapshot,0, snapshot.length) >=0?false: addIfAbsent(e, sna...
JUC 包中 Set 主要有 CopyOnWriteArraySet、ConcurrentSkipListSet。 CopyOnWriteArraySet 继承于 AbstractSet 类,对应的基础容器为 HashSet。其内部组合了一个 CopyOnWriteArrayList 对象,它是核心操作是基于 CopyOnWriteArrayList 实现的。 ConcurrentSkipListSet 是线程安全的有序的集合,对应的基础容器为 TreeSet。它继承于 Abst...
Enclosing class: CopyOnWriteAccessors public abstract static class CopyOnWriteAccessors.CopyOnWriteSet<T> extends CopyOnWriteAccessors.CopyOnWriteCollection<T> implements java.util.Set<T> Accessor with copy-on-write semantics, for accessing a set inside a transactional object.Field...
方法名:setCopyOnWrite CacheConfiguration.setCopyOnWrite介绍 [英]Whether the Cache should copy elements it gets [中]缓存是否应该复制它获取的元素 代码示例 代码示例来源:origin: bonitasoft/bonita-engine protectedCacheConfigurationgetEhCacheConfiguration(finalorg.bonitasoft.engine.cache.CacheConfigurationcacheConfig...
原博文 JDK-1.8-CopyOnWriteSet 2018-08-08 23:38 −... 好吧,就是菜菜 0 1398 CentOS 7.7 安装JDK 1.8 2019-11-22 21:58 −1.先卸载自带的OpenJDK rpm -qa | grep java rpm -e --nodeps 查出的文件 删除后再用java -version命令看看 2.下载Oracle JDK到Linux JDK所有版本下载地址:Oracle Java...