JAVA初始化顺序

 1 package com.java.test;
 2 
 3 import java.util.Random;
 4 
 5 class Insect{
 6     //8.初始化基本类型变量i
 7     private int i=9;
 8     //(j没有初始化，不访问)
 9     protected int j;
10     public Insect() {
11     //10.访问基类构造器
12         System.out.println("i="+i+",j="+j);
13         j=39;
14         System.out.println("x1="+x1);
15     }
16     //9.初始化基本类型变量l
17     private int l=10;
18     //2.首先访问基类的static变量x1-调用静态方法
19     private static int x1=printInit("static.x1 initialized.");
20         static int printInit(String s){
21         System.out.println(s);
22         return new Random().nextInt(10)+1;
23     }
24     //3.依次初始化static块和static变量
25     static {
26         int z1=1;
27         int z2=2;
28     }
29     static int y1=1;
30     
31 }
32 
33 public class JavaTest extends Insect{
34     //11.初始化导出类基本变量k
35     private int k=printInit("JavaTest.k initialized.");
36     public JavaTest(){
37     //13.访问导出类构造器
38         System.out.println("k="+k);
39         System.out.println("j="+j);
40         System.out.println("x2="+x2);
41     }
42     //4.访问导出类的static变量x2-调用静态方法
43     private static int x2=printInit("static.x2 initialized.");
44     //5.依次初始化static变量和static块
45     static int y2=2;
46     static {
47         int z3=1;
48         int z4=1;
49     }
50     //12.初始化导出类基本变量p
51     private int p=3;
52 
53     //1.寻找main入口，找出JavaTest类的编译代码(JavaTest.class文件中)
54     public static void main(String[] args) {
55         //6.进入main方法内部
56         System.out.println("JavaTest constructor.");
57         //7.初始化类
58         JavaTest test= new JavaTest();
59         //14.结束
60     }
61 }