runtime对象使用

public class PrintThread implements Runnable {private InputStream _is = null;private BufferedReader _reader = null;public PrintThread(InputStream is){this._is = is;}public void run() {try{while(this != null){_reader = new BufferedReader(new InputStreamReader(_is));String _line = null;while((_line = _reader.readLine()) != null){System.out.println(_line);}_is.close();_reader.close();break;}}catch(Exception e){e.printStackTrace();}}}  

public class NetIo {public static void main(String[] agrs){Process process;try {process = Runtime.getRuntime().exec("ping ***.***.***.***");Thread thread = new Thread(new PrintThread(process.getInputStream()));Thread thread_1 = new Thread(new PrintThread(process.getErrorStream()));thread.start();thread_1.start();process.getOutputStream().flush();process.getOutputStream().close();if(process.waitFor() != 0){if(process.exitValue() == 1){System.out.println("命令执行失败!");}}} catch (IOException e) {e.printStackTrace();} catch (InterruptedException e) {e.printStackTrace();}}}