Kuidas saab koodi kaudu objektide käitumist juhtida polümorfismi abil?

Polymorphism in Java allows objects of different classes to respond differently to the same method calls, which is useful for managing object behavior.

To implement behavior management through polymorphism, a base interface or abstract class with a defined method is usually created, and then different derived classes implement this method in their own way.

Example:

interface Animal {
    void makeSound();
}

class Dog implements Animal {
    public void makeSound() {
        System.out.println("Woof woof");
    }
}

class Cat implements Animal {
    public void makeSound() {
        System.out.println("Meow");
    }
}

public class Main {
    public static void main(String[] args) {
        Animal[] animals = {new Dog(), new Cat()};
        for (Animal animal : animals) {
            animal.makeSound(); // Method call depends on the specific object
        }
    }
}

This way, object behavior management reduces to calling a single method, and the specific implementation is determined at runtime based on the object type. This facilitates code extension and maintenance.