java - JSP Reading response body after HTTP GET request to URL -

in msisdn lookup api documentation says

by default, results of request lookups available in body of response in line-by-line, key=value format. example, typical response might receive after sending request follows:

--start:447777777777 status="ok" mcc="234" mnc="02"
operatorname="o2" isoalpha3code="gbr" end:447777777777--

i sent request relevant parameters such want information of msisdn "447766551112"

url parameter example

http://api.txtnation.com/networks/lookup?username=user123&password=pwd123& msisdn=447766551112 

my code

string addparam=java.net.urlencoder.encode("username", "utf-8")                         + "="                         + java.net.urlencoder.encode(username, "utf-8")                         + "&"                         + java.net.urlencoder.encode("password", "utf-8")                         + "="                         + java.net.urlencoder.encode(password, "utf-8")                         + "&"                         + java.net.urlencoder.encode("msisdn", "utf-8")                         + "="     + java.net.urlencoder.encode(msisdn, "utf-8")  java.net.url msisdnlookup= new java.net.url("http://api.txtnation.com/networks /lookup/?"+addparam);  java.net.httpurlconnection mmpostback = (java.net.httpurlconnection)  msisdnlookup.openconnection(); mmpostback.setdooutput(true); mmpostback.setrequestmethod("get"); 

it shows me http response :ok

system.out.println(mmpostback.getresponsemessage()); 

i receive "status", "mcc", "mnc" after requests.. shows me null value. in api says , it's in body of response.. how can find these?

status=request.getparameter("status"); mcc=request.getparameter("mcc"); mnc=request.getparameter("mnc"); 

i tried reading parameters , headers couldn't find above names- status, mcc, mnc, operatorname,isoalpha3code

how can read request body in jsp according api documentation says above? how read line line, key=value? please suggest