关于继承中静态代码块，构造代码块，构造函数执行顺序

class HelloA {

    public HelloA() {
        System.out.println("HelloA");
    }
   
    { System.out.println("I'm A class"); }
   
    static { System.out.println("static A"); }

}

public class HelloB extends HelloA {
    public HelloB() {
        System.out.println("HelloB");
    }
   
    { System.out.println("I'm B class"); }
   
    static { System.out.println("static B"); }
   
    public static void main(String[] args) {

        System.out.println("-------main start-------");
        new HelloB();
        new HelloB();
        System.out.println("-------main end-------");
    }
}

 Microsoft Windows [版本 6.2.9200]
(c) 2012 Microsoft Corporation。保留所有权利。

C:Usersxw>javac HelloB.java

C:Usersxw>java HelloB
static A
static B
-------main start-------
I'm A class
HelloA
I'm B class
HelloB
I'm A class
HelloA
I'm B class
HelloB
-------main end-------