how to choose java nio vs io?

Question

As we had known, If we want to use traditional IO to construct server, it must block somewhere, so we had to use loop or one thread one socket mode, So nio seem it is better

Answer 1

Some advantages of the NIO.2 API over the legacy java.io.File class for working with files:

• Supports file system–dependent attributes.
• Allows you to traverse a directory tree directly.
• Supports symbolic links.

For specific use cases and more details, you can see this article