Fastest way to write an array of integers to a file in Java?

Question

As the title says, I\'m looking for the fastest possible way to write integer arrays to files. The arrays will vary in size, and will realistically contain anywhere between

Answer 1

Array is Serializable - can't you just use writer.writeObject(data);? That's definitely going to be faster than individual writeInt calls.

If you have other requirements on the output data format than retrieval into int[], that's a different question.