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  ¸Ã·½·¨ÓÐ6¸ö¿É·ÃÎÊ°æ±¾:  
  1.exec(String   command)  
  2.exec(String   command,   String   envp[],   File   dir)    
  3.exec(String   cmd,   String   envp[])  
  4.exec(String   cmdarray[])  
  5.exec(String   cmdarray[],   String   envp[])  
  6.exec(String   cmdarray[],   String   envp[],   File   dir)  
   
  Ò»°ãµÄÓ¦ÓóÌÐò¿ÉÒÔÖ±½ÓʹÓõÚÒ»°æ±¾,µ±Óл·¾³±äÁ¿´«µÝµÄʱºòʹÓúóÃæµÄ°æ±¾.  
  ÆäÖÐ2ºÍ6°æ±¾¿ÉÒÔ´«µÝÒ»¸öĿ¼,±êʶµ±Ç°Ä¿Â¼,ÒòΪÓÐЩ³ÌÐòÊÇʹÓÃÏà¶ÔĿ¼µÄ,ËùÒÔ¾ÍҪʹÓÃÕâ¸ö°æ±¾.  
  µ±ÒªÖ´ÐÐÅú´¦ÀíµÄʱºò,²»ÄÜÖ±½Ó´«µÝÅú´¦ÀíµÄÎļþÃû,¶øҪʹÓÃ:  
  cmd.exe   /C   start   Åú´¦ÀíÎļþÃû  
  ʹÓÃdosÃüÁî(±ÈÈçdir)ʱҲҪʹÓõôµ÷ÓÃ.  
   
  Èç¹ûÏëÓëµ÷ÓõijÌÐò½øÐн»»¥,ÄÇô¾ÍҪʹÓø÷½·¨µÄ·µ»Ø¶ÔÏóProcessÁË,ͨ¹ýProcessµÄgetInputStream(),getOutputStream(),getErrorStream()·½·¨¿ÉÒԵõ½ÊäÈëÊä³öÁ÷,È»ºóͨ¹ýInputStream¿ÉÒԵõ½³ÌÐò¶Ô¿ØÖÆ̨µÄÊä³öÐÅÏ¢,ͨ¹ýOutputStream¿ÉÒÔ¸ø³ÌÐòÊäÈëÖ¸Áî,ÕâÑù¾Í´ïµ½Á˳ÌÐòµÄ½»»»¹¦ÄÜ.  
  Àý×ÓÈçÏÂ:   
  package com.broadcontact.netadmin.schedule;
import java.io.PrintWriter;
import java.io.PrintStream;
import java.io.IOException;
import java.sql.SQLException;
import java.util.Date;
import java.io.StringReader;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.File;
import java.io.BufferedWriter;
import java.io.OutputStreamWriter;
/**
* <p>Title: netadmin</p>
* <p>Description: </p>
* <p>Copyright: Copyright (c) 2002</p>
* <p>Company:


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public class PrimerNumber {
public static void main(String[] args) {
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