121-java-object-oriented-design

Review and improve Java code using comprehensive object-oriented design guidelines and refactoring practices.

Prerequisites: Run ./mvnw compile or mvn compile before applying any change. If compilation fails, stop immediately and do not proceed — compilation failure is a blocking condition.

Core areas: Fundamental design principles (SOLID, DRY, YAGNI), class and interface design (composition over inheritance, immutability, accessibility minimization, accessor methods), core OOP concepts (encapsulation, inheritance, polymorphism), object creation patterns (static factory methods, Builder pattern, Singleton, dependency injection, avoiding unnecessary objects), OOD code smells (God Class, Feature Envy,...

当您需要审查、改进或重构 Java 代码以实现面向对象的设计质量时使用，包括应用 SOLID、DRY 和 YAGNI 原则、改进类和接口设计、修复 OOP 概念误用（封装、继承、多态性）、识别和解决代码异味（God Class、Feature Envy、Data Clumps），或改进对象创建模式、方法设计和异常处理。 java 技能專案的一部分 來源：jabrena/cursor-rules-java。