Java调用DOS命令

import java.io.*;  
public class DT {  
      public static void main(String[] args) throws IOException  
      {  
      String command="ipconfig";<br>      Runtime r=Runtime.getRuntime();  
      Process p=r.exec(command);  
      BufferedReader br=new BufferedReader(new InputStreamReader(p.getInputStream()));  
      StringBuffer sb=new StringBuffer();  
      String inline;  
      while(null!=(inline=br.readLine())){  
      sb.append(inline).append("/n");  
      }  
      System.out.println(sb.toString());  
      }  
}