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Thread setDaemon ·½·¨
import java.io.IOException;
/*
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* Õâ¸öÏ߳̾ßÓÐ×îµÍµÄÓÅÏȼ¶£¬ÓÃÓÚΪϵͳÖÐµÄÆäËü¶ÔÏóºÍÏß³ÌÌṩ·þÎñ¡£
* ½«Ò»¸öÓû§Ïß³ÌÉèÖÃÎªÊØ»¤Ï̵߳ķ½Ê½ÊÇÔÚÏ̶߳ÔÏó´´½¨Ö®Ç°µ÷ÓÃÏ̶߳ÔÏóµÄsetDaemon·½·¨¡£
* µäÐ͵ÄÊØ»¤Ïß³ÌÀý×ÓÊÇJVMÖеÄϵͳ×ÊÔ´×Ô¶¯»ØÊÕỊ̈߳¬
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* µ±ÎÒÃǵijÌÐòÖв»ÔÙÓÐÈκÎÔËÐÐÖеÄThread£¬
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* ËüʼÖÕÔڵͼ¶±ðµÄ״̬ÖÐÔËÐУ¬ÓÃÓÚʵʱ¼à¿ØºÍ¹ÜÀíϵͳÖеĿɻØÊÕ×ÊÔ´¡£
* ÊØ»¤½ø³Ì£¨Daemon£©ÊÇÔËÐÐÔÚºǫ́µÄÒ»ÖÖÌØÊâ½ø³Ì¡£Ëü¶ÀÁ¢ÓÚ¿ØÖÆÖն˲¢ÇÒÖÜÆÚÐÔµØÖ´ÐÐijÖÖÈÎÎñ»òµÈ´ý´¦ÀíijЩ·¢ÉúµÄʼþ¡£
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* ÄÇJavaµÄÊØ»¤Ïß³ÌÊÇʲôÑù×ÓµÄÄØ¡£
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*/
public class testThread extends Thread {
   
    public testThread() {
    }
    /** *//**
     * Ï̵߳Ärun·½·¨£¬Ëü½«ºÍÆäËûÏß³ÌͬʱÔËÐÐ
     */
    public void run(){
        for(int i = 1; i <= 100; i++){
            try{
                Thread.sleep(100);
               
            } catch (InterruptedException ex){
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