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/**

* Description:

* <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>

* <br/>Copyright (C), 2001-2012, Yeeku.H.Lee

* <br/>This program is protected by copyright laws.

* <br/>Program Name:

* <br/>Date:

* @author Yeeku.H.Lee kongyeeku@163.com

* @version 1.0

*/

class Root

{

static{

System.out.println("Root的静态初始化块");

}

{

System.out.println("Root的普通初始化块");

}

public Root()

{

System.out.println("Root的无参数的构造器");

}

}

class Mid extends Root

{

static{

System.out.println("Mid的静态初始化块");

}

{

System.out.println("Mid的普通初始化块");

}

public Mid()

{

System.out.println("Mid的无参数的构造器");

}

public Mid(String msg)

{

//通过this调用同一类中重载的构造器

this();

System.out.println("Mid的带参数构造器，其参数值："

+ msg);

}

}

class Leaf extends Mid

{

static{

System.out.println("Leaf的静态初始化块");

}

{

System.out.println("Leaf的普通初始化块");

}

public Leaf()

{

//通过super调用父类中有一个字符串参数的构造器

super("疯狂Java讲义");

System.out.println("执行Leaf的构造器");

}

}

public class Test

{

public static void main(String[] args)

{

new Leaf();

new Leaf();

}

}