给出下面程序的运行结果。 class Fu { int num = 8; { System.out.println("Fu constructor code " + num); } Fu() { show(); } void show() { System.out.println("Fu show"); } } class Zi extends Fu { int num = 9; { System.out.println("constructor code " + num); num = 10; } Zi() { System.out.println("zi constructor " + num); } void show() { System.out.println("zi show " + num); } } public class Demo { public static void main(String[] args) { new Zi(); } }