How to have Java method return generic list of any type?

Question

I would like to write a method that would return a java.util.List of any type without the need to typecast anything:

List

        

Answer 1

private Object actuallyT;

public  List magicalListGetter(Class klazz) {
    List list = new ArrayList<>();
    list.add(klazz.cast(actuallyT));
    try {
        list.add(klazz.getConstructor().newInstance()); // If default constructor
    } ...
    return list;
}

One can give a generic type parameter to a method too. You have correctly deduced that one needs the correct class instance, to create things (klazz.getConstructor().newInstance()).