class RangerBizUtil {

	public String getImageExtension(String contentType) {
		if (contentType.toLowerCase().endsWith("jpg")
				|| contentType.toLowerCase().endsWith("jpeg")) {
			return "jpg";
		} else if (contentType.toLowerCase().endsWith("png")) {
			return "png";
		}
		return "";
	}

	public  RangerBizUtil();

}