public static String getJSONResponseFromURL(String url, Hashtable<String, String> httpGetParams){
		String json_string="";
		List<NameValuePair> nvps=buildNameValuePair(httpGetParams);
		url=buildGetUrl(nvps,url);
		System.out.println("URL==>"+url);
		InputStream is = null;
		try{
			HttpGet httpget = new HttpGet(url);
			HttpResponse response = getThreadSafeClient().execute(httpget);

			HttpEntity entity = response.getEntity();
			is = entity.getContent();
			BufferedReader reader=new BufferedReader(new InputStreamReader(is),8192);
			String line=null;
			while((line=reader.readLine())!=null) {json_string=json_string+line;}
			response.getEntity().consumeContent();
			System.out.println("Json Response==>"+json_string);
		}catch(Exception e){
			return null;
		}
		return json_string;
	}