本内容遵循CC 4.0 BY-SA版权协议 写这篇笔记的时候，正好是我系统啃 Java 集合框架的第 22 天。说实话，List 是我日常写代码时见过最多次的集合类型：接口返回用 List、方法参数接收用 List、数据库查询结果封装成 List，甚至连同事聊天时说“这个需求给我一个集合 ...

本内容遵循CC 4.0 BY-SA版权协议 本文深入剖析ArrayList作为动态顺序表的底层实现，涵盖顺序表特性、随机访问与增删效率对比、泛型设计与接口实现；重点解析其1.5倍扩容机制（非2倍）、源码级扩容逻辑及性能影响；结合扑克牌洗牌案例说明容量预设、随机访问 ...

ArrayList is a dynamic array. In other words, you don't need to specify the size at the beginning, you can store values one after another as you go.

[Bug]: OssAgentStateStore can persist large Base64 media but cannot reload the resulting AgentState Describe the bug With AgentScope-Java 2.0.3 and Jackson 2.21.4, an AgentState containing a large ...

ArrayList, HashMap, and the rest are not thread-safe. If several threads modify one at the same time, data can be corrupted. The fixes, like ConcurrentHashMap, come in the concurrency days of this ...

The only string in the list is "Java". If you search for "PHP" from here, the return value is null. The original code for this exercise returns null only when nothing is found. What the caller wants ...

Azure Communication Services is introducing breaking changes, and some services are being retired. Learn more in the retirement and breaking changes guide. To implement custom actions or modify the ...

Deploying changes to orchestrator logic is a key consideration when working with durable orchestration systems. If an orchestration is interrupted and later resumed (for instance, during a host update ...