Comando DOS

import   java.io.*; 

class execInput { 
    public static void main(String Argv[]) { 
   try { 
       String ls_str; 

       Process ls_proc = Runtime.getRuntime().exec("cmd /C dir"); 

       BufferedReader ls_in = new BufferedReader(new InputStreamReader 
                                          (ls_proc.getInputStream())); 

       try { 
      while ((ls_str = ls_in.readLine()) != null) { 
          System.out.println(ls_str); 
      } 
       } catch (IOException e) { 
      System.exit(0); 
       } 
   } catch (IOException e1) { 
       System.err.println(e1); 
       System.exit(1); 
   } 

   System.exit(0); 
    } 
}