Java执行cmd

JAVA 执行dos命令

String cmd = "ping www.baidu.com";
try {
    Process process = Runtime.getRuntime().exec(cmd);
    InputStream is = process.getInputStream();
    InputStreamReader isr = new InputStreamReader(is,"GB2312");
    BufferedReader br = new BufferedReader(isr);
    String content = br.readLine();
    while (content != null) {
        System.out.println(content);
        content = br.readLine();
  }
} catch (IOException e) {
  e.printStackTrace();
}