适合三类人：刚学 Java 语法、想靠刷题把 Scanner 和集合用熟的同学；从 C++ 转过来、被 nextLine 坑过的同学；以及想给自己搭一个「写完就能问」的轻量工作流的同学。 我踩过的坑集中在两个地方。

原创 最新推荐文章于 2026-10-21 15:45:28 发布 · 51 阅读 本文深入解析IntelliJ IDEA自动导包的底层机制，阐明其默认不自动导入Scanner等类是出于命名空间安全、模块化适配和团队协作一致性考量。详细拆解代码补全、粘贴上下文感知、重构触发三大生效场景，并系统 ...

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