java进程执行linux命令

在项目中需要在java中查询相关进程信息，故需要在java中执行shell脚本，ps -ef | grep java |grep xxx

/**
     * <获取具体服务的在线状态>
     *
     * @param serviceName 服务名
     * @return 服务状态
     * @throws
     */
    private Boolean getServiceState(String serviceName)
    {
        LOGGER.info("serviceName is {}.", serviceName);

        Boolean state = false;

        String[] cmds = {"/bin/sh", "-c", "ps -ef | grep java | grep " + serviceName};
        Reader reader = null;
        BufferedReader bReader = null;
        InputStream inputStream = null;
        List<String> cmdOutput = new ArrayList<>();
        String line = null;
        try
        {
            Process process = Runtime.getRuntime().exec(cmds);
            inputStream = process.getInputStream();
            reader = new InputStreamReader(inputStream);
            bReader = new BufferedReader(reader);

            while ((line = bReader.readLine()) != null)
            {
                cmdOutput.add(line);
            }
            LOGGER.info("cmdoutput is {}.", cmdOutput);
            if (null != cmdOutput && cmdOutput.size() == 2)
            {
                state = true;
            }

            process.waitFor();

            return state;
        }
        catch (Exception ex)
        {
            LOGGER.error("get service state error.");
            return state;
        }
        finally
        {
            try
            {
                if (null != inputStream)
                {
                    inputStream.close();
                }
                if (null != reader)
                {
                    reader.close();
                }
                if (null != bReader)
                {
                    bReader.close();
                }
            }
            catch (IOException e)
            {
                LOGGER.error("close inputstream error.");
                return state;
            }
        }
    }