String url = "www.example.com"; // enter url here

    JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.GET, url, null,
    new Response.Listener<JSONObject>() {
        @Override
        public void onResponse(JSONObject response) {

            // Handle your response

        }

    }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {

            // Handle your error

        }

    }){
        @Override
        public Map<String, String> getHeaders() throws AuthFailureError {
            Map<String, String>  params = new HashMap<String, String>();
            params.put("Accept-Language", "en");

            return params;
        }
    };



    MainApplication.getInstance(this).addToRequestQueue(jsonObjectRequest);
}[enter image description here][1]