Example2.java

Gson gson = new Gson();

System.out.println("A generic object demo");
// a generified object
GenericModel<Integer> model = new GenericModel<>(12);

// converting to json representation
String json = gson.toJson(model);
System.out.println("json representation :" + json);

// converting back to object
Type collectionType = new TypeToken<GenericModel<Integer>>() {
}.getType();
GenericModel<Integer> modelObj = 
                  gson.fromJson(json, collectionType);
System.out.println("converted object representation: " + modelObj);

System.out.println("\nA object from collection framework\n");
// for collection framework objects
List<String> listOfString = new ArrayList<>();
listOfString.add("ajduke");
listOfString.add("ajduchess");

// conversion to json
String jsonStr = gson.toJson(listOfString);
System.out.println("json representation :" + jsonStr);

Type collectionType2 = new TypeToken<List<String>>() {
}.getType();
List<String> listObj = gson.fromJson(jsonStr, collectionType2);
System.out.println("converted object representation: " + listObj);