我jdk用 runtime调用程序 源代码如下

import java.io.*;
public class test {
        public static void main(String[] args)throws IOException {
              
                    Runtime runtime = Runtime.getRuntime();
                    Process p;
                    p = runtime.exec("dir ");
                    BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
                    String strTmp = "";
                    while((strTmp = br.readLine())!=null) {
                           System.out.println(strTmp);
                    }
         }
}

然后编译通过 却出现

---------- java ----------
java.io.IOException: CreateProcess: dir  error=0
at java.lang.Win32Process.create(Native Method)
at java.lang.Win32Process.(Compiled Code)
at java.lang.Runtime.execInternal(Native Method)
at java.lang.Runtime.exec(Compiled Code)
at java.lang.Runtime.exec(Compiled Code)
at java.lang.Runtime.exec(Runtime.java:152)
at test.main(Compiled Code)
Exception in thread "main" Normal Termination
Output completed (1 sec consumed).

这样错误，为什么？  哪位高手告诉我如何解决？？

对了  如果用


p = runtime.exec("format a:");

format.com 可有哦

也会出同样的错误，我是cjde3tec 的同学……

p = runtime.exec("format.com a:");
--- ZJQ

try{
Runtime runtime = Runtime.getRuntime();
                    Process p;
                    p = runtime.exec("dir ");
                    BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
                    String strTmp = "";
                    while((strTmp = br.readLine())!=null) {
                           System.out.println(strTmp);
                  }
  }catch(Exception e){}

try{
Runtime runtime = Runtime.getRuntime();
                    Process p;
                    p = runtime.exec("dir ");
                    BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
                    String strTmp = "";
                    while((strTmp = br.readLine())!=null) {
                           System.out.println(strTmp);
                  }
  }catch(Exception e){}