How do I get a class instance of generic type T?

Question

I have a generics class, Foo. In a method of Foo, I want to get the class instance of type T, but I just can\'t call T.

Answer 1

A better route than the Class the others suggested is to pass in an object that can do what you would have done with the Class, e.g., create a new instance.

interface Factory {
  T apply();
}

 void List make10(Factory factory) {
  List result = new ArrayList();
  for (int a = 0; a < 10; a++)
    result.add(factory.apply());
  return result;
}

class FooFactory implements Factory> {
  public Foo apply() {
    return new Foo();
  }
}

List> foos = make10(new FooFactory());