Question

I have a parser method which will fill a user defined collection type upon completion. I am trying to abstract this class in my abstract parser class.

Here is the code

    protected List<Collection> parseData(List<Data> data, Class<Collection> collectionType)
    {
        List<Collection> parsedData = new ArrayList<collectionType>();
        //Parse data
        return parsedData
    }

However I keep getting the following errors on the list instantiation line:
collectionType cannot be resolved to a type,
ArrayList cannot be resolved to a type

This is my first time trying something like this and I am not sure what is wrong. Any help would be appreciated.

Answer 1

You need to use generic method. Something like this.

C# :

    protected List<T> parseData<T>(List<Data> data, T collectionType)
    {
        List<T> parsedData = new List<T>();
        //Parse data
        return parsedData;
    }

JAVA :

protected <T> List<T> callFriend(List<Data> data, Class<T> collectionType) {
     List<T> parsedData = new ArrayList<T>();
        //Parse data
        return parsedData;
}