abstract classes and interfaces 抽象类和接口 altitude of the reflecting interfaces 反射界面高度 ..
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Extensible framework - Common functions and features are abstracted as loosely coupled abstract classes and interfaces, which can be extended to provide application-specific implementations.
可扩展框架——将通用功能和特性抽象为松耦合的抽象类和接口，可以扩展这些类和接口以提供应用程序特定的实现。
Capture highlevel, stable concepts in abstract classes and interfaces and provide implementations using concrete classes.
在抽象的类和接口中捕捉高级、稳定的概念，并用具象类实现。
During the technical interviews, probably the most frequently asked question is, "What's the difference between Java abstract classes and interfaces?"
在一次面试中，最频繁的问题可能是：抽象类和接口有什么区别？
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