How to create list with unknown object in java

Question

I speak Spanish, use the translator to ask this question, Sorry for the spelling.

Also, do not be like asking exactly what I want to do.

I want to create a list of an object passing through parameter.

public void createListUnknown(? Class myClass?  or  ? Object myObject?) {

    List<myClass> my_list;

       //or

    List<myObject> my_list;


}

example use:

public class Model{
    public String name;
    public String age;
}

as it should be?

createListUnknown(?? MyModel ??)

Basically I want to create a list with an object that comes parameter to a function

An example where you want to apply is the following:

    //final GsonModelUsuariosLoginGet gsonModelUsuariosLoginGet
//= gson.fromJson(responseData, GsonModelUsuariosLoginGet.class);
return gson.fromJson(responseData, httpObject.getObjectGet().getClass());

and

Object aClass = httpObject.getObjectGet().getClass();

List< httpObject.getObjectGetClass() > aClasses;

Type collectionType = new TypeToken<List<aClass>>(){}.getType();
final List<GsonModelArticulos> articulos = gson.fromJson(responseData, collectionType);

You edited your question to add an exemple but you don't show where you want to use your method. — Arthur Rey, Jun 08 '16 at 23:35
Thanks, First of all thanks. probe your code and tell me the following message: "list is not abstract can be instantiated." this also fails : return new List() = new ArrayList(); — jojemapa, Jun 08 '16 at 23:49
This will suit your answer : http://stackoverflow.com/questions/6231973/difference-between-list-list-listt-liste-and-listobject — RicardoVallejo, Jun 09 '16 at 00:25

score 3 · Accepted Answer · edited Jun 09 '16 at 04:13

3

create list

public <T> List<T> makeList(Class<T> type) {
        return new ArrayList<T>();
    }

get type list

Using the Type interface.

private <T> Type getType(Class<T> type) {
        Type typeOfObjectsListNew = new TypeToken<ArrayList<T>>() {}.getType();
        return typeOfObjectsListNew;
    }

edited Jun 09 '16 at 04:13

Basil Bourque

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answered Jun 09 '16 at 02:36

jojemapa

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How to create list with unknown object in java

1 Answers1