Gson: Is there an easier way to serialize a map

Question

This link from the Gson project seems to indicate that I would have to do something like the following for serializing a typed Map to JSON:

    public static         


        

Answer 1

Only the TypeToken part is neccesary (when there are Generics involved).

Map myMap = new HashMap();
myMap.put("one", "hello");
myMap.put("two", "world");

Gson gson = new GsonBuilder().create();
String json = gson.toJson(myMap);

System.out.println(json);

Type typeOfHashMap = new TypeToken>() { }.getType();
Map newMap = gson.fromJson(json, typeOfHashMap); // This type must match TypeToken
System.out.println(newMap.get("one"));
System.out.println(newMap.get("two"));

Output:

{"two":"world","one":"hello"}
hello
world