Custom Deserializer GSON

I have been stumped on this topic for 2 days now, and cant seem to find what I need.

I have a class as follows:

public class myClass {

private String name;
private ArrayList<String> arr1;
private ArrayList<String> arr2;
}

I am posting json via jQuery ajax to a jsp file that needs to fill an array list of myClass for further processing later.

The JSON looks like this:

[{"name":"myName","arr1":["foo","bar","blahh"],"arr2":["foo","bar","blahh"]},
 {"name":"myName2","arr1":["foo","bar","blahh"],"arr2":["foo","bar","blahh"]}]

I tried to make a custom deserializer, but all of my attempts have been in vain.

This is my current function:

     json = request.getParameter("myStuff");
     Gson gson = new Gson();
 Type listType = new TypeToken<ArrayList<myClass>>() {}.getType();
ArrayList<myClass> myClassList= new Gson().fromJson(json, listType);

Thanks to anyone who can help.

UPDATE: sorry, I forgot to clearly state what I am asking.

I have 2 questions that are related:

1. Do I need to use a deserializer?

2. If yes, what is wrong with the one I have now?

The code and JSON you posted serializes and deserializes as expected for me, without any custom deserialization. I don't see anything wrong.

import java.io.FileReader;
import java.lang.reflect.Type;
import java.util.ArrayList;

import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;

public class Foo
{
  public static void main(String[] args) throws Exception
  {
    Type listType = new TypeToken<ArrayList<myClass>>() {}.getType();
    Gson gson = new Gson();
    ArrayList<myClass> myClassList= new Gson().fromJson(new FileReader("input.json"), listType);
    System.out.println(gson.toJson(myClassList));
  }
}

class myClass
{
  private String name;
  private ArrayList<String> arr1;
  private ArrayList<String> arr2;
}

Is this not what you're trying to achieve? Are you sure that the value of json received from request.getParameter("myStuff") is what you said it is?