初始化代码块和构造器的执行顺序

 1 package Lab5;
 2 
 3 
 4 class Root{
 5         static{
 6             System.out.println("Root的静态初始化");
 7         }
 8         {
 9             System.out.println("Root普通初始化代码");
10         }
11          public Root(){
12              System.out.println("root 无参数构造方法");
13          };
14 }
15   
16 class Mid extends Root{
17     
18     static {
19         System.out.println("Mid的静态的初始化代码");
20     }
21     {
22         System.out.println("Mid的初始化代码");}
23     public Mid(){
24          System.out.println("mid 的无参构造方法");}
25     public Mid(String msg){
26             this();
27            System.out.println("mid的有参的构造方法，其值为"+msg);
28     }
29 }
30 class Leaf extends Mid{
31       static{
32           System.out.println("Leaf,静态初始化块");
33       }
34       {
35           System.out.println("leaf普通初始化块");
36       } 
37       public Leaf(){
38           
39           super("非常疯狂java讲义");
40           System.out.println("执行leaf 的构造器");
41       }
42 }
43 public class StaticCode {
44 
45     public static void main(String[] args) {
46             new Leaf();
47             System.out.println("----------------------------------");
48             new Leaf();
49 
50     }
51 
52 }