Volley Post Request without param (Header Authentication)

[khairul islam]

Is it possible to make a post request without parameters for header authentication?

Here is my code: 

StringRequest request = new StringRequest(Request.Method.POST, BASE_URL, new Response.Listener<String>() {
    @Override
    public void onResponse(String response) {
        if (!response.equals(null)) {
            // do something 
        }
    }

}, new Response.ErrorListener() {
    @Override
    public void onErrorResponse(VolleyError error) {
        Log.e("tttt ",  error.toString());
    }
}) {

    //This is for Headers If You Needed
    @Override
    public Map<String, String> getHeaders() throws AuthFailureError {
        Map<String, String> params = new HashMap<String, String>();
        params.put("Content-Type", "application/json; charset=UTF-8");
        params.put("Key", "Value");
        return params;
    }
};
RequestQueue queue = Volley.newRequestQueue(getApplicationContext());
queue.getCache().clear();
queue.add(request);