块，静态块，子类，父类，继承加载顺序

1. class parent{
2.     
3.     
4.     {
5.     System.out.println("(parent)Loading the block...");
6.     }
7.     
8.     static 
9.     {
10.         System.out.println("(parent)Loading the static block...");
11.     }
12.     
13.     public parent()
14.     {
15.     System.out.println("(parent)Loading the construct...");
16.     }
17. }
19. class child extends parent
20. {
21.     {
22.             System.out.println("(child)Loading the block...");
23.     }
24.     
25.     static 
26.     {
27.         System.out.println("(child)Loading the static block...");
28.     }
29.     
30.     public child()
31.     {
32.             System.out.println("(child)Loading the construct...");
33.     }
34. }
36. class load{
37.     
38.     public static void main(String ar[])
39.     {
40.         //new parent();
41.         new child();
42.     }
43.     
44. }

输出结果是:

(parent)Loading the static block...
(child)Loading the static block...
(parent)Loading the block...
(parent)Loading the construct...
(child)Loading the block...
(child)Loading the construct...

 

事实并非想象中：

(parent)Loading the static block...

(parent)Loading the block...

(parent)Loading the construct...
(child)Loading the static block...
(child)Loading the block...
(child)Loading the construct...

 

分析：

过程静态构造块>构造块>构造方法

由于继承是要先加载父类，再加载子类

而static 是与类中共存的所以一开始生成对象时，必先先执行静态方法，因此会先打印

(parent)Loading the static block...
(child)Loading the static block...

然后构造块是先构造方法，而子类中默认调用了super()方法，所以会打印

(parent)Loading the block...
(parent)Loading the construct...

最后打印

(child)Loading the block...
(child)Loading the construct...

分析到此，不知道理解有没错！