AJDT项目为用aspectj进行面向方面(aspect - oriented)的软件开发提供了基于Eclipse Platform的工具支持。

The AJDT project provides Eclipse Platform-based tool support for aspect-oriented software development with AspectJ.

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像依赖注射（ Dependency Injection）(DI)、面向方面编程（ Aspect-Oriented Programming）(AOP)，以及注解（Annotations）这样的设计理念，在常规的软件开发，尤其在API设计中能起到怎样的作用呢？

What role design concepts like Dependency Injection (DI), Aspect-Oriented Programming (AOP), and Annotations can play in software development in general and API design in particular?

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