package test; 
 /**  * Add one sentence class summary here.  * Add class description here.  *  * @author lxx  * @version 1.0, 2004-11-16  */ public class TestCmd {     public TestCmd(){}    /* public  void main(String args[]){         try {           Process process = Runtime.getRuntime().exec("cmd.exe  /c  start  http://www.csdn.net");  //登录网站           Process process = Runtime.getRuntime().exec("cmd.exe  /c  start  ping 10.144.98.100");  //调用Ping命令         }catch (Exception  e)         {             e.printStackTrace();             }                  }     }  */
  //在项目下建立一个名为hello的文件夹     public static void main(String[] args) {         System.out.println(System.getProperty("user.dir"));         createFolder("hello");       } 
     private static void createFolder(String folderName) {        String temp = System.getProperty("user.dir") + java.io.File.separator+ folderName;        java.io.File f = new java.io.File(temp);        f.mkdirs();      } 
 }
 
  
在Java程序中获取当前运行程序的路径 
import java.io.*; 
public class Test { 
       public static void main(String[] args) { 
              File directory  = new File("."); 
              try { 
                     File newPath = new File(directory.getCanonicalPath()+"NewFolder"); 
                     newPath.mkdir(); 
              }catch(Exception exp) 
              { 
                     exp.printStackTrace(); 
              } 
       } 
} 
//File directory       = new File("."); 
//directory.getCanonicalPath();取得当前路径 
  在Jsp页面中调用Ping命令---PingIP.jsp <%@ page language="java" contentType="text/html; charset=gb2312"  import="java.io.*" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <title>Ping IP测试页面</title> </head> 
<body> <div align="center">   <h2>Ping IP测试页面</h2> </div>  
<%      Runtime  runtime  =  Runtime.getRuntime();      Process  process  =null;      String  line=null;      InputStream  is  =null;      InputStreamReader  isr=null;      BufferedReader  br  =null;      String  ip="www.sina.com.cn";  //待Ping的地址     try      {          process  =runtime.exec("ping  "+ip);          is  =  process.getInputStream();          isr=new  InputStreamReader(is);          br  =new  BufferedReader(isr);          out.println("<pre>");          while(  (line  =  br.readLine())  !=  null  )          {              out.println(line);              out.flush();          }          out.println("</pre>");          is.close();          isr.close();          br.close();      }      catch(IOException  e  )      {          out.println(e);          runtime.exit(1);      }   %>   
</body> </html>
   
 
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