Object-Oriented programming (summary of this chapter)

1. Object-oriented has 3 main features, which are encapsulated. Succession, polymorphism.


2, suppose a drug is set to inherit must specify Notfinal, this class cannot be inherited or.

3, if you want to check out the data to sort, you can use map or order to define the function.

4. In a class. The construction method provided by default requires that all property content be passed. Assuming that the user has the need, you can also use constructor to define the constructor that defines the parameters.

5, in object-oriented. The ability to instantiate a parent class through a subclass so that the functions called by each parent class object implement different functions depending on the subclass of the function that is being covered.


6, you can use not instantiable to define abstract functions in a class. The class in which the abstract function resides is called an abstract class, which is inherited by subclasses using overriding for function override.


7. The ability to create a data table from a specified class. The fields in this table are the properties in the class.


8, through the object view, the data table can be returned directly in the form of the class object.

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Object-Oriented programming (summary of this chapter)