How to implement dynamic binding in java

Concept

1. Dynamic binding refers to binding according to the type of object during operation.

2. The process by which the JVM determines which object to call during running is called dynamic binding.

The process of dynamic binding

3. The virtual machine extracts the method table of the actual type of the object, searches for the method signature, and calls the method.

Example

public class Main {
    public static void main(String[] args){
        A b = new B();
        b.print();
    }
}
 
class A{
    public void print(){
        System.out.println("A");
    }
}
 
class B extends A{
    @Override
    public void print(){
        System.out.println("B");
    }
}

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