Passing the Class<T> in java of a generic list?
- by Rob Stevenson-Leggett
I have a method for reading JSON from a service, I'm using Gson to do my serialization and have written the following method using type parameters.
public T getDeserializedJSON(Class<T> aClass,String url)
{
Reader r = getJSONDataAsReader(url);
Gson gson = new Gson();
return gson.fromJson(r, aClass);
}
I'm consuming json which returns just an array of a type e.g.
[
{ "prop":"value" }
{ "prop":"value" }
]
I have a java class which maps to this object let's call it MyClass. However to use my method I need to do this:
RestClient<ArrayList<MyClass>> restClient = new RestClient<ArrayList<MyClass>>();
ArrayList<MyClass> results = restClient.getDeserializedJSON(ArrayList<MyClass>.class, url);
However, I can't figure out the syntax to do it. Passing just ArrayList.class doesn't work.
So is there a way I can get rid of the Class parameter or how do I get the class of the ArrayList of MyClass?
