听了好久的类加载执行顺序，自己一直没有实践过，今天休息时想到这个问题，亲自动手验证如下：

上代码

public class Domain {    public Domain(String str){        System.out.println(str);    }}public class SuperClass {    private static Domain d1 = new Domain("father static member variable");    private Domain d2 = new Domain("father common member variable");    static{        System.out.println("father static code block");    }    {        System.out.println("father dynamic code block");    }    SuperClass(){        System.out.println("father no arguments constructor");    }}public class SubClass extends SuperClass {    private static Domain d1 = new Domain("child static member variable");    private Domain d2 = new Domain("child common member variable");    static {        System.out.println("child static code block");    }    {        System.out.println("child dynamic code block");    } public SubClass(){        System.out.println("child no arguments constructor");    } 　public static void main(String[] args){         SubClass t1 = new SubClass();    }}

以上三个类，SubClass继承自SuperClass，Domain为测试用的类。执行结果如下：