141-java-refactoring-with-modern-features
提高可读性与性能，给出具体替换建议与示例
将旧 Java 代码重构为使用 lambda、Stream、Optional 等现代特性
把老旧 Java 代码重构成用 lambda、Stream、Optional、java.time 等现代特性，提高可读性和空安全。在代码审查或升级到 Java 8+（甚至 Java 25）时用，会把匿名类换成 lambda、循环换 Stream、Date/Calendar 换 java.time 等，能大幅简化样板代码并跟上新语法。还会建议使用 collection factory、text blocks、var 推断等实用改进。
▸ 展开 SKILL.md 英文原文
Use when you need to refactor Java code to adopt modern Java features (Java 8+) — including migrating anonymous classes to lambdas, replacing Iterator loops with Stream API, adopting Optional for null safety, switching from legacy Date/Calendar to java.time, using collection factory methods, applying text blocks, var inference, or leveraging Java 25 features like flexible constructor bodies and module import declarations. This should trigger for requests such as Review Java code for modern Java development; Apply best practices for modern Java development in Java code. Part of cursor-rules-java project
帮我安装这个 skill：https://raw.githubusercontent.com/jabrena/plinth/main/skills/141-java-refactoring-with-modern-features/SKILL.mdcurl -fsSL "https://raw.githubusercontent.com/jabrena/plinth/main/skills/141-java-refactoring-with-modern-features/SKILL.md"# Modern Java Development Guidelines (Java 8+) Identify and apply modern Java (Java 8+) refactoring opportunities to improve readability, maintainability, and performance. **What is covered in this Skill?** - Lambda expressions and method references (over anonymous classes) - Stream API for declarative collection processing - `Optional` for null-safe APIs - `java.time` API (replacing `Date`/`Calendar`) - Default interface methods, `var` type inference - Unmodifiable collection factory methods (`List.of()`, `Set.of()`, `Map.of()`) - Text blocks for multi-line strings - Java 25 Flexible Constructor Bodies (JEP 513) - Java 25 Module Import Declarations (JEP 511) **Scope:** The reference is