Newly inserted item in sqlite throw null pointer exception?

Am having one doubt am fetching the records from server and saving it and displaying it with recyclerview when i fetch it and displaying it from sqlite it throws null pointer excpetion for first time don't know where am doing mistake:

RequestQueue queue = Volley.newRequestQueue(getBaseContext());

JsonObjectRequest jsonObjRequest = new JsonObjectRequest(Request.Method.GET, params[0], new JSONObject(),
        new Response.Listener<JSONObject>() {

            @Override
            public void onResponse(JSONObject response) {
                String server_response = response.toString();
                try {
                    JSONObject json_object = new JSONObject(server_response);
                    JSONArray json_array = new JSONArray(json_object.getString("AccountPageLoadAccountListResult"));
                    for (int i = 0; i < json_array.length(); i++) {
                        Model_Account modelobjs = new Model_Account();
                        JSONObject json_arrayJSONObject = json_array.getJSONObject(i);
                        modelobjs.setCompany_group(json_arrayJSONObject.getString("CompanyName"));
                        modelobjs.setState(json_arrayJSONObject.getString("Region"));
                        accountListAdapter.addModelClass(modelobjs);
                        account_sf_db.InsertorUpdate(modelobjs);


                    }
                }  catch (JSONException e) {
                    e.printStackTrace();
                }

            }
        },
        new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                Toast.makeText(getBaseContext(), error.toString(), Toast.LENGTH_SHORT).show();

            }
        });
queue.add(jsonObjRequest);

And this where am displaying listitem :

List<Model>lisobj=new Arraylist(
 listobj = account_sf_db.list();
            accountListAdapter = new AccountListAdapter(listobj, getApplicationContext());
            recyclerView.setAdapter(accountListAdapter);

as soon as i click recyclerview item it throws null pointer exception:

accountListAdapter.setOnItemClickListener(new AccountListAdapter.AccountList() {
                    @Override
                    public void Clickable(View v, int position) {

                        Bundle bundle = new Bundle();
                        Model_Account modelobj = (Model_Account) listobj.get(position);
                        int id = modelobj.getID();
                        bundle.putInt("ID", id);
                        Intent intent = new Intent(getApplicationContext(), DetailAccount.class);
                        intent.putExtras(bundle);
                        startActivity(intent);
                    }
                });

Here is my Log:

 FATAL EXCEPTION: main
                                                                        Process: precision.servicefirst, PID: 31312
                                                                        java.lang.NullPointerException
                                                                            at precision.servicefirst.Accounts$1$3.Clickable(Accounts.java:111)
                                                                            at precision.servicefirst.AccountListAdapter$MyViewHolder$1.onClick(AccountListAdapter.java:48)
                                                                            at android.view.View.performClick(View.java:4444)
                                                                            at android.view.View$PerformClick.run(View.java:18457)
                                                                            at android.os.Handler.handleCallback(Handler.java:733)
                                                                            at android.os.Handler.dispatchMessage(Handler.java:95)
                                                                            at android.os.Looper.loop(Looper.java:136)
                                                                            at android.app.ActivityThread.main(ActivityThread.java:5113)
                                                                            at java.lang.reflect.Method.invokeNative(Native Method)
                                                                            at java.lang.reflect.Method.invoke(Method.java:515)
                                                                            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
                                                                            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:609)
                                                                            at dalvik.system.NativeStart.main(Native Method)

This is the method i call before inserting:

  public void addModelClass(Model_Account modelClass){
        dataSet.add(modelClass);
        notifyItemInserted(dataSet.size()-1);
    }