Java执行cmd命令并接收返回结果

	String command="ipconfig -all";		String s="IPv4";		String line = null;		StringBuilder sb = new StringBuilder();		Runtime runtime = Runtime.getRuntime();		try {		PRocess process = runtime.exec(command);		BufferedReader	bufferedReader = new BufferedReader				(new InputStreamReader(process.getInputStream()));							while ((line = bufferedReader.readLine()) != null) {				sb.append(line + "/n");				if (line.contains(s)) {					System.out.println(line);				}			}		} catch (IOException e) {			// TODO 自动生成的 catch 块			e.printStackTrace();		}		//System.out.println(sb.toString());