Programmer Think

Part I - self introduction Part II - basic knowledge of Java 1. Differences between interfaces and abstract classes abstract class Abstract modified classes are abstract classes, and modified methods are abstract methods.Abstract classes can have no abstract methods, but classes with abstract methods must be declared as abstract classes ...

preface: Thank you for reading uncle Qi's article. Thank you to all readers. If it's convenient, please move your hands to make a fortune and pay attention. Uncle Qi's article may not be so vivid and interesting, but I still hope it can bring you improvement. At the end of the article, some of Uncle Qi's dry goods are also the resources ...