java执行.bat文件

try ... {String exeBat = "c:/test.bat";Process child = Runtime.getRuntime().exec(exeBat);InputStream in = child.getInputStream();BufferedReader br= new BufferedReader(new InputStreamReader(in));String line = br.readLine().toString();while(line!=null )...{    System.out.println(line);  //输出测试    line = br.readLine().toString();}try...{    child.waitFor();    br.close();    in.close();}catch (Exception e) ...{    e.printStackTrace();}} catch  (Exception e)  ... {    e.printStackTrace();}