"Java Programming thought" study notes--the eighth chapter polymorphism

In object-oriented programming language, polymorphism is the third basic feature following data abstraction and inheritance.

Polymorphism does what and how by separating, separating the interface from the implementation from another angle. Polymorphism can not only

Method call Binding

Associating a method call with the same method body is called a binding. Binding (implemented by the compiler and the linker, if any) before the program executes is called early binding.

Late binding: Binds at run time based on the type of the object. Late binding is also known as dynamic binding or runtime binding.

In addition to the static method and the final method in Java (the private method belongs to the final method), all other methods are late-bound. This means that in general, we don't have to decide whether late binding should occur----It happens automatically

Private method (private default is final), domain, static methods are not polymorphic, polymorphic only for common methods. The constructor (which is actually the static method) is also not polymorphic.

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"Java Programming thought" study notes--the eighth chapter polymorphism