父子继承关系的各模块加载顺序记录

父类

public class Animal {

    static {
        System.out.println("Animal_static");
    }

    {
        System.out.println("Animal_block");
    }

    public Animal() {
        System.out.println("Animal_Cons");
    }
}

子类

public class Dog extends Animal {

    static {
        System.out.println("Dog_static");
    }

    {
        System.out.println("Dog_bloc");
    }

    public Dog() {
        System.out.println("Dog_cons");
    }

    public static void main(String[] args) {
        Dog classOrder = new Dog();

    }
}

最终输出顺序

Animal_static
Dog_static
Animal_block
Animal_Cons
Dog_block
Dog_cons