Displaying database records in android using JAVA RESTful webservice -

i trying display database record using java restful web service. have able create login form using cannot display records on database. tried code not working @ all. when button pressed nothing happens. heres code.

driverdetails.java

class details extends activity {

textview name1; textview plate1; button btngetdata;  //url json array private static string url = "http://192.168.254.108:8080/taxisafe/display/taxidetails";  //json node names private static final string tag_user = "taxi"; private static final string tag_name = "taxi_name"; private static final string tag_email = "taxi_plate_no";  jsonarray user = null;  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);      setcontentview(r.layout.activity_main);     btngetdata = (button)findviewbyid(r.id.getdata);     btngetdata.setonclicklistener(new view.onclicklistener() {          @override         public void onclick(view view) {             new jsonparse().execute();          }     });  }  private class jsonparse extends asynctask<string, string, jsonobject> {     @override     protected void onpreexecute() {         super.onpreexecute();         name1 = (textview)findviewbyid(r.id.name);         plate1 = (textview)findviewbyid(r.id.plate);     }      @override     protected jsonobject doinbackground(string... args) {         httpconnection jparser = new httpconnection();          // getting json url         jsonobject json = jparser.getjsonfromurl(url);         return json;     }     @override     protected void onpostexecute(jsonobject json) {         try {             // getting json array             user = json.getjsonarray(tag_user);             jsonobject c = user.getjsonobject(0);              // storing  json item in variable             string name = c.getstring(tag_name);             string email = c.getstring(tag_email);              //set json data in textview             name1.settext(name);             plate1.settext(email);          } catch (jsonexception e) {             e.printstacktrace();         }      } }  } 

httpconnection.java

public class httpconnection {  static inputstream = null; static jsonobject jobj = null; static string json = "";  // constructor public httpconnection() {  }  public jsonobject getjsonfromurl(string url) {      // making http request     try {         // defaulthttpclient         defaulthttpclient httpclient = new defaulthttpclient();         httppost httppost = new httppost(url);          httpresponse httpresponse = httpclient.execute(httppost);         httpentity httpentity = httpresponse.getentity();         = httpentity.getcontent();      } catch (unsupportedencodingexception e) {         e.printstacktrace();     } catch (clientprotocolexception e) {         e.printstacktrace();     } catch (ioexception e) {         e.printstacktrace();     }      try {         bufferedreader reader = new bufferedreader(new inputstreamreader(                 is, "iso-8859-1"), 8);         stringbuilder sb = new stringbuilder();         string line = null;         while ((line = reader.readline()) != null) {             sb.append(line + "n");         }         is.close();         json = sb.tostring();     } catch (exception e) {         log.e("buffer error", "error converting result " + e.tostring());     }      // try parse string json object     try {         jobj = new jsonobject(json);     } catch (jsonexception e) {         log.e("json parser", "error parsing data " + e.tostring());     }      // return json string     return jobj;  } } 

i suggest adding volley project

https://developer.android.com/training/volley/index.html

and following example here https://developer.android.com/training/volley/request.html#request-json

you not need create own http request. let volley handle network request using jsonobjectrequest