Java NIO and NIO2 are two evolutions of the Java I/O API. It does not make Java I/O obsolete in any way, but merely bring more functionalities, leveraging the capabilities of file systems, not used by Java I/O.

Java NIO and NIO2 have been added to the JDK to add more functionalities offered by the file systems that aren't used by Java I/O. In this course, Java 8 Fundamentals: NIO and NIO2, you'll learn how to use Java NIO to read and write data efficiently in bulk mode, and asynchronously to handle more operations simultaneously. First, you'll explore the fundamental objects of this API, including Buffer, Channel, and Selector to precisely set up performant I/O applications for disk or network access. Next, you'll discover how to efficiently navigate through very large directory structures, and how to trigger actions on directory events plugged on the native capabilities of the file systems for better performance. Finally, you'll delve into all of these APIs in action in extended live coding sessions, showing you how to properly use the patterns and how to deal with errors. By the end of this course, you'll have the necessary knowledge to design and create robust and performant I/O systems by following the right patterns, whether you want to access file systems or networks.