[Java] Java关于含有继承类的成员初始化过程讲解

import static net.mindview.util.print.*;
/**
 * all rights reserved, designed by www.tydic.com
 * 
 * @project: myexerciseproject
 * @title: beetle.java
 * @package:
 * @description: todo(learn java)
 * @author: yang xiaoyong
 * @date: 2017年10月30日 下午4:22:19
 * @version: v1.0
 * @copyright: 2017 inc. all rights reserved. 注意：本内容仅限于学习交流使用，禁止外泄以及用于其他的商业目的
 */
public class beetle extends insect {
 private int k = printinit("beetle.k initialized");
 beetle() {
 // todo auto-generated constructor stub
 print("k = " + k);
 print("j = " + j);
 }
 private static int x2 = printinit("static beetle.x2 initialized");
 public static void main(string[] args) {
 print("beetle constructor");
 beetle beetle = new beetle();
 }
}
class insect {
 private int i = 9;
 protected int j;
 insect() {
 // todo auto-generated constructor stub
 print("i = " + i + ". j = " + j);
 j = 39;
 }
 private static int x1 = printinit("static insert.x1 initialized");
 static int printinit(string s) {
 print(s);
 return 47;
 }
}

• 1. 首先需要由加载器将编译好的beetle.class文件加载到jvm中。
  
• 2. 通过extends 关键字识别基类insect，加载insect.class文件。
  

static insert.x1 initialized
static beetle.x2 initialized