Class Utils

fileloader/src/main/java/com/krishna/fileloader/utility/Utils.java:23–86

Created by krishna on 15/10/17.

 */

public class Utils {

    public static Object getObject(File file, Class clazz) {
        Object object;
        try {
            object = deserializeObject(file, clazz);
        } catch (IOException | ClassNotFoundException e) {
            object = deserializeJson(file, clazz);
        }
        return object;
    }

    private static Object deserializeJson(File file, Class clazz) {
        String jsonString = AndroidFileManager.readFileAsString(file);
        Gson gson = new Gson();
        return gson.fromJson(jsonString, clazz);
    }

    private static Object deserializeObject(File file, Class clazz) throws IOException, ClassNotFoundException {
        ObjectInputStream in = new ObjectInputStream(new FileInputStream(file));
        Object object = in.readObject();
        in.close();
        return object;
    }

    public static ThreadPoolExecutor getThreadPoolExecutor() {
        int mCorePoolSize = 60;
        int mMaximumPoolSize = 80;
        int mKeepAliveTime = 30;
        BlockingQueue<Runnable> workQueue = new LinkedBlockingQueue<Runnable>(mMaximumPoolSize);
        return new ThreadPoolExecutor(mCorePoolSize, mMaximumPoolSize, mKeepAliveTime, TimeUnit.SECONDS, workQueue);
    }

    public static boolean isValidFileName(String fileName) {
        Pattern pattern = Pattern.compile(".*\\..*");
        return pattern.matcher(fileName).matches();
    }

    public static long parseLastModifiedHeader(String lastModified) {
        long time = 0;
        if (!TextUtils.isEmpty(lastModified)) {
            try {
                SimpleDateFormat df = new SimpleDateFormat("E, dd MMM yyyy HH:mm:ss z");
                time = df.parse(lastModified).getTime();
            } catch (ParseException e) {
                e.printStackTrace();
            }
        }
        return time;
    }

    public static String getLastModifiedTime(long timeStamp) {
        String lastModifiedTime = null;
        try {
            if (timeStamp > 0) {
                SimpleDateFormat df = new SimpleDateFormat("E, dd MMM yyyy HH:mm:ss z");
                lastModifiedTime = df.format(timeStamp);
            }