Java polymorphism-three definitions and two methods

table of Contents

1. Polymorphic formula-three definitions and two methods

2, specific content

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1. Polymorphic formula-three definitions and two methods

Three definitions

• The parent class defines the subclass construction;
• Interface definition implementation class construction;
• The abstract class defines the construction of the entity class.

Two methods

• Method overloading;
• Method rewriting.

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2, specific content

Method overloading: overloading methods in a class. The method name is the same, the parameters are different, and the function is different.

Method rewriting: The subclass rewrites the parent method and the method body. The method name and parameters are the same. The function is different.