Java Time Utility.

Get current date or time or date and time with your format.

    /*
        FORMAT DATE AND TIME: "yyyy/MM/dd HH:mm:ss"
        FORMAT DATE: "yyyy-MM-dd"
    */
    public static String getCurrentDateTimeWithFormat(String formatDateTime) {
        DateFormat dateFormat = new SimpleDateFormat(formatDateTime);
        Date date = new Date();
        return dateFormat.format(date);    
    }

Check validate date with format.

    public static boolean isValidDate(String strDate, String format) {
        if (strDate != null && format != null) {
            strDate = strDate.trim();
            format = format.trim();
            if (!strDate.isEmpty() && !format.isEmpty()) {
                try {
                    SimpleDateFormat dateFormat = new SimpleDateFormat(format);
                    if (strDate.trim().length() != dateFormat.toPattern().length()) {
                        return false;
                    }
                    
                    dateFormat.setLenient(false);
                    dateFormat.parse(strDate);
                } catch (ParseException ex) {
                    return false;
                }
            }
        }
        return true;
    }