A runnable, interview-focused reference for the Java Collections Framework (Java 17+). Each major collection has its own Java file. Examples demonstrate commonly used methods, and comments explain the ...
This repository is my hands-on backend engineering learning and interview portfolio. It documents my continuous progress from Core Java fundamentals to production-oriented backend concepts, with ...
IntroductionWhen developing web applications in Java, simply learning Java syntax and Spring annotations is not enough to understand the full picture of actual development.A single application is ...
本内容遵循CC 4.0 BY-SA版权协议 “真正搞懂hashCode和hash算法”——这标题乍看像教科书里的章节名，但在我带过的几十个Java开发新人、参与过的十余个中大型系统重构项目里，它从来不是理论题 ...
Ten weeks ago, we opened up a preview of an LSP-powered extension that brings IntelliJ IDEA’s smartness for Java and Kotlin into VS Code and Cursor. As mentioned in that blog post, this is part of a ...
本内容遵循CC 4.0 BY-SA版权协议 前两天处理一个工单，业务反馈“幂等去重失效了”。我瞄了一眼代码，往 HashSet 里塞了两个内容完全一样的订单VO，结果 size() 返回 2。当时我第一反应就是：这个 ...
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