直接上代码

// write your code here
// String[] command = new String[]{"ipconfig", "/all"};
String [] command=new String[]{"ping","www.baidu.com"};
Process process = Runtime.getRuntime().exec(command);

InputStream is = process.getInputStream();
InputStreamReader inputStreamReader = new InputStreamReader(is, Charset.forName("GBK"));
BufferedReader reader = new BufferedReader(inputStreamReader);
for (String line = null; (line = reader.readLine()) != null; ) {
    System.out.println(line);
}
reader.close();

效果