How can i get this Object from my api call am using retrofit

Am trying to access my api that return an object with an array of data but i cant access am getting an error saying Expected BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 2 path $ am using retrofit into my android application

Here is what the api returns when i call it

{
"students": [
    {
        "_id": "5e74775518b0f00c0123925b",
        "registrationno": "IWR/D/2016/0024",
        "firstname": "Mariam",
        "lastname": "Wamigomba",
        "amount": 10000,
        "reason": "lost key ",
        "__v": 0
    }]}

here is my interface

public interface OcappJsonApiSNAL {
    @GET("getStudents")
    Call<List<StudentClearanceSNAL>> getStudents(@Header ("Authorization") String token);
}

On my java class

OcappJsonApiSNAL ocappJsonApi = retrofit.create (OcappJsonApiSNAL.class);
Call<List<StudentClearanceSNAL>> listCall = ocappJsonApi.getStudents ("Bearer token");
listCall.enqueue (new Callback<List<StudentClearanceSNAL>> () {
    @Override
    public void onResponse(Call<List<StudentClearanceSNAL>> call, Response<List<StudentClearanceSNAL>> response) {
        if(!response.isSuccessful ()) {
            Toast.makeText (getActivity (),"From OCApp " + response.code (),Toast.LENGTH_LONG).show ();
            return;
        }
        List<StudentClearanceSNAL> studentClearancess = response.body ();
           for (  final StudentClearanceSNAL studentClearance: studentClearancess)
                        {

Error Am Getting

Expected BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 2 path $

Call<List<StudentClearanceSNAL>> listCall = ocappJsonApi.getStudents ("Bearer token");

Instead of map list externally you just create new model with list

Create new model :

 Class StudentClearanceSNALList{
 @SerializedName("students") // it’s must match with your Jason object name
 List<StudentClearanceSNAL> studentClearanceSNAL = new Arraylist<>();
//getter and setter
}

Then update your interface and class like the following code:

Interface:

public interface OcappJsonApiSNAL {
    @GET("getStudents")
    Call<StudentClearanceSNALList> getStudents(@Header ("Authorization") String token);
}

Class :

OcappJsonApiSNAL ocappJsonApi = retrofit.create (OcappJsonApiSNAL.class);
Call<StudentClearanceSNALList> listCall = ocappJsonApi.getStudents ("Bearer token");
listCall.enqueue (new Callback<StudentClearanceSNALList> () {
    @Override
    public void onResponse(Call<StudentClearanceSNALList> call, Response<StudentClearanceSNALList> response) {
        if(!response.isSuccessful ()) {
            Toast.makeText (getActivity (),"From OCApp " + response.code (),Toast.LENGTH_LONG).show ();
            return;
        }
 StudentClearanceSNALList studentClearancess = response.body ();

Why I suggest this means it’s expect list but you pass object so it’s not accept so please use the above code.

I hope it’s helps you thanks