JAVA中涉及静态初始化程序和继承时，执行的顺序是什么？

Question

I ran across this code:

public class A {
    static{
        System.out.print("A");
    }

    A(){
        System.out.print("a");
    }
}

public class B extends A {
    static{
        System.out.print("B");
    }

    B(){
        System.out.print("b");
    }
}

public class Test {
    public static void main(String[] args) {
        new B();
    }
}

My understanding of order of object construction is:

1. Initialize member fields of the base class(es)
2. Run the base class(es) constructor(s)
3. Initialize member fields of sub class
4. Run the constructor of sub class

And my understanding of execution of static initializer is

• the static initializer for a class gets run when the class is first accessed, either to create an instance, or to access a static method or field.

But I can not come up with the correct printing, i got:

A(base initialzer)
a(base constructor)
B(subclass initialize)
b(subclass constructor)

Could someone explain what is the correct order and why?

Update

Answer 1

static blocks will called whenever the class is loaded by the classloader , thus the correct order is :

i) class A is loaded (because B extends A is requested) so the first static block is called , and it prints A

ii)class B is getting loaded , so the second static block gets called , and it prints B

iii)default constructor of A (because new B is requested) so it prints a

iv) and finally default constructor of B as it was requested with new B() so it prints b , the output is ABab