java - JSON Array data getting from assets -

here application when enter train no 17603 edit text , enter button. correct it, traindetails.txt assets folder, , convert string pass string in json array. showed in logcat. here not getting error.

json requset stored in .txt place in assets folder

{       "status":"ok",     "result":{          "trainno":"17603",        "route":[             {                "code":"kcg",              "name":"kacheguda",              "arr":"first",              "dep":"21:00",              "day":1,              "stop":"y",              "dts":"2.5"           }        ]     } } 

main activity

    package com.example.trainroutes;     import java.io.bufferedreader;     import java.io.ioexception;     import java.io.inputstreamreader;     import org.json.jsonarray;     import org.json.jsonexception;     import org.json.jsonobject;      import android.support.v7.app.actionbaractivity;     import android.os.bundle;     import android.util.log;     import android.view.menu;     import android.view.menuitem;     import android.view.view;     import android.view.view.onclicklistener;     import android.widget.button;     import android.widget.edittext;     import android.widget.listview;     import android.widget.toast;      public class mainactivity extends actionbaractivity implements onclicklistener {         private edittext train_search_edittext;         private button submit_button;         private listview train_listview;          // private string jsonstirng ;          @override         protected void oncreate(bundle savedinstancestate) {             super.oncreate(savedinstancestate);             setcontentview(r.layout.activity_main);             train_search_edittext = (edittext) findviewbyid(r.id.trainsearch);             submit_button = (button) findviewbyid(r.id.search_train_button);             train_listview = (listview) findviewbyid(r.id.trian_name_listview);             submit_button.setonclicklistener(this);           }          @override         public void onclick(view v) {             // todo auto-generated method stub             if (train_search_edittext.gettext().tostring().equals("17603")) {                 try {                     // reading text file assets folder                     stringbuffer stringbuffer = new stringbuffer();                     bufferedreader bufferreader = null;                     try {                         bufferreader = new bufferedreader(new inputstreamreader(                                 getassets().open("traindetails.txt")));                         string temp;                         while ((temp = bufferreader.readline()) != null) {                             stringbuffer.append(temp);                         }                     } catch (ioexception e) {                         e.printstacktrace();                     } {                         try {                             bufferreader.close();                         } catch (ioexception e) {                             e.printstacktrace();                         }                     }                     string jsonstirng = stringbuffer.tostring();                     log.e("json string", "json string"+jsonstirng);                     // creating jsonobject string                      jsonobject jsonmainobj = new jsonobject(jsonstirng);                     // creating json array json object                      jsonarray jsonarrayobject = jsonmainobj.getjsonarray("route");                     (int = 0; < jsonarrayobject.length(); i++) {                         jsonobject jsonobject = jsonarrayobject.getjsonobject(i);                         // getting data individual object                         string code = jsonobject.getstring("code");                         string name = jsonobject.getstring("name");                         string arr = jsonobject.getstring("arr");                         string dep = jsonobject.getstring("dep");                         int day = jsonobject.getint("day");                         string stop = jsonobject.getstring("stop");                         string dts = jsonobject.getstring("dts");                          log.d("jsonobject", "train " + name.tostring());                     }                  } catch (jsonexception e) {                     // todo auto-generated catch block                     e.printstacktrace();                 }             } else {                 toast.maketext(getapplicationcontext(), "invalid  ",                         toast.length_short).show();             }         }     } 

here how should do

 string jsonstring = loadjsonfromasset(getapplicationcontext());      try {         jsonobject jsonmainobj = new jsonobject(jsonstring);           jsonobject jsonarrayobjectresult = jsonmainobj.getjsonobject("result");         jsonarray jsonarrayobjectroute = jsonarrayobjectresult.getjsonarray("route");         (int = 0; < jsonarrayobjectroute.length(); i++) {             jsonobject jsonobject = jsonarrayobjectroute.getjsonobject(i);             // getting data individual object             string code = jsonobject.getstring("code");             string name = jsonobject.getstring("name");             string arr = jsonobject.getstring("arr");             string dep = jsonobject.getstring("dep");             int day = jsonobject.getint("day");             string stop = jsonobject.getstring("stop");             string dts = jsonobject.getstring("dts");              log.d("jsonobject", "train " + name.tostring());         }       } catch (jsonexception e) {         e.printstacktrace();     }   public string loadjsonfromasset(context mcontext) {     string json = null;     try {          inputstream = mcontext.getassets().open("test.json");         int size = is.available();         byte[] buffer = new byte[size];         is.read(buffer);         is.close();         json = new string(buffer, "utf-8");     } catch (exception e) {         e.printstacktrace();     }     return json;  }