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

The main improvement you can have for writing int[] is to either;

• increase the buffer size. The size is right for most stream, but file access can be faster with a larger buffer. This could yield a 10-20% improvement.

• Use NIO and a direct buffer. This allows you to write 32-bit values without converting to bytes. This may yield a 5% improvement.

BTW: You should be able to write at least 10 million int values per second. With disk caching you increase this to 200 million per second.