// Classtoken version:
public static <T> void fill(Addable<T> addable, Class<? extends T> classToken, int size) {
for (int i = 0; i < size; i++)
try {
addable.add(classToken.newInstance());
} catch (Exception e) {
throw new RuntimeException(e);
}
}
// Generator version:
public static <T> void fill(Addable<T> addable, Generator<T> generator, int size) {
for (int i = 0; i < size; i++) addable.add(generator.next());
}