How to convert string array to object using GSON/ JSON?

Question

I have a json like this:

[
  [
    "Passport Number",
    "NATIONALITY",
    "REASONS"
  ],
  [
    "SHAIS100",
    "INDIA",
    ""
  ],
  [
    "",
    "",
    "Agent ID is not matched."
  ],
  [
    "",
    "",
    ""
  ]
]

I want to populate this to ArrayList<String[]>,Please tell me how to do?

And empty strings should not convert as null.

Answer 1

That's very simple, you just need to do the following:

1.- First create the Gson object:

Gson gson = new Gson();

2.- Then get the correspondent Type for your List<String[]> (Note that you can't do something like List<String[]>.class due to Java's type erasure):

Type type = new TypeToken<List<String[]>>() {}.getType();

3.- Finally parse the JSON into a structure of type type:

List<String[]> yourList = gson.fromJson(yourJsonString, type);