private Object actuallyT;
public <T> List<T> magicalListGetter(Class<T> klazz) {
List<T> 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()
).