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Static issues, final issues, abstract issues in Java inheritance

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  • The static method or property can be inherited, and the static method can be overridden by the quilt class, but the static method cannot override the quilt class as an abstract method
  • The final method in the parent class can be inherited by the class, but it cannot be overwritten or overridden in a subclass. In short, once the method is declared final in the parent class, the subclass cannot move the method at all
  • A class that is defined as abstract does not necessarily have an abstract method, but once a class is defined as abstract it cannot be instantiated

Static issues, final issues, abstract issues in Java inheritance

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