我可以在我的子类方法中改变父类方法的默认行为吗？

class Parent {
    public void printMessage() {
        System.out.println("Hello, I am the parent class.");
    }
}

class Child extends Parent {
    @Override
    public void printMessage() {
        System.out.println("Hello, I am the child class.");
    }
}

public class Main {
    public static void main(String[] args) {
        Parent parent = new Parent();
        parent.printMessage();  // 输出：Hello, I am the parent class.

        Child child = new Child();
        child.printMessage();   // 输出：Hello, I am the child class.
    }
}