Question about Generics

Hi,

I was wondering why the first method below can return an ArrayList, while the second one cannot.

    public <T> List<?> method1(List<T> type) {

        System.out.println(type);
        return new ArrayList<String>();
    }

    public <T> List<T> method2(List<T> type) {

        System.out.println(type);
        return new ArrayList<String>();
    }

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