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Class is not Abstract and does not Override error in Java

How to reproduce that error as simply as possible: Java code: Shows this compile time error: Why won’t it compile? Because: You created a class Cat which implements an interface Animal. Your interface called Animal has an abstract method called roar which must be overridden. You didn’t provide for method roar. There are many ways … Read more

Is it possible to make abstract classes in Python?

Use the abc module to create abstract classes. Use the abstractmethod decorator to declare a method abstract, and declare a class abstract using one of three ways, depending upon your Python version. In Python 3.4 and above, you can inherit from ABC. In earlier versions of Python, you need to specify your class’s metaclass as ABCMeta. Specifying the metaclass has different … Read more