public static String getTimestamp(int format) {
    	switch(format) {
    	case SHORT:
    		return shortFormat.format(new Date());
    	case MEDIUM:
    		return mediumFormat.format(new Date());
    	case LONG:
    		return longFormat.format(new Date());
    	case FULL:
    		return fullFormat.format(new Date());
    	default:
    		return null;
    	}
    }