Questions about a class in Java in order of precedence

First, post the code, as follows:

public class Test {
public static void Main (string[] args) {
A a=new B ();
A.A ();
}
}

Class a{
Public A () {
System.out.println ("I am A");
}
static{
System.out.println ("AAAAA");
}
{
System.out.println ("111");
}
public void A () {
System.out.println ("AAA");
}
}

Class B extends a{
Public B () {
System.out.println ("I am B");
}
static{
System.out.println ("bbbbb");
}
{
System.out.println ("222");
}
public void A () {
System.out.println ("BBB");
}
}

The result of this code execution is as follows:

AAAAA
bbbbb
111
I ' am A
222
I ' am B
Bbb

This is a very basic but very error-prone point of knowledge, because in Java classes The code is executed in the following order:

Parent Class A static code block, subclass b static code block, parent Class A non-static code block, parent Class A constructor, subclass b non-static code block, sub-class B constructor

As for the output of the A.A () method, the variable A is a Class A () method covered by the quilt class, the common method of variable a (non-static method), at compile time is consistent with the parent class, the runtime is consistent with the subclass, there is a replication, output: BBB;

If the A () method of the variable A is static, then it exists before the object is established and cannot be replicated by the Class B object after the occurrence, so there is no replication, still output: AAA

Questions about a class in Java in order of precedence