Can you pass an int array to a generic method in java?

Question

I\'m playing around with some code katas and trying to get a better understanding of java generics at the same time. I\'ve got this little method that prints arrays like I l

Answer 1

Java does not allow the construction of generic arrays in a type-safe manner. Use a generic sequence type instead (such as java.util.List, for example).

Here's how I would write your test program, using a generic container class fj.data.Stream:

import fj.data.Stream;
import static fj.data.Stream.range;

// ...

public int[] intArray(Stream s) {
  return s.toArray(Integer.class).array()
}

public static void main(String[] args) {
  Stream integerStream = range(1, 10);
  print(intArray(integerStream));
  print(intArray(integerStream.take(3)));
  print(intArray(integerStream.drop(3)));

  // ...
}