The essence and difference between IO and NIO in Java
Introduction The full name of IO is input output, is the bridge between the java program and the outside world, IO refers to all the classes in the java.io package, they exist from java 1.0. NIO is called new IO, is the new generation of IO introduced in java 1.4.
What is the nature of IO? What is the difference between it and NIO? How do we learn IO and NIO?