代码逻辑题之继承-静态代码块-main方法执行顺序

public class ParentMainTest {
    static int x;
    static {
        x++;
        System.out.println("ParentMainTest_static..." + x);
    }
    public static void main(String[] args) {
        new SonMainTest(6);
    }
    int n = 10;
    {
        n++;
        System.out.println("ParentMainTest..." + n);
    }

}

public class SonMainTest extends  ParentMainTest{
    SonMainTest(int a){ 
        this.a=a; 
        System.out.println("SonMainTest.a=" + a );
    }
    int a;
    {
        System.out.println("SonMainTest..."+this.a);
    }
    static
    {
        x++;
        System.out.println("SonMainTest_static..." +x);
    }
}