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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

*/

// 通过继承Thread类来创建线程类

public class FirstThread extends Thread

{

private int i ;

// 重写run方法，run方法的方法体就是线程执行体

public void run()

{

for ( ; i < 100 ; i++ )

{

// 当线程类继承Thread类时，直接使用this即可获取当前线程

// Thread对象的getName()返回当前该线程的名字

// 因此可以直接调用getName()方法返回当前线程的名

System.out.println(getName() + " " + i);

}

}

public static void main(String[] args)

{

for (int i = 0; i < 100; i++)

{

// 调用Thread的currentThread方法获取当前线程

System.out.println(Thread.currentThread().getName()

+ " " + i);

if (i == 20)

{

// 创建、并启动第一条线程

new FirstThread().start();

// 创建、并启动第二条线程

new FirstThread().start();

}

}

}

}