4. Java Blocking I/O (BIO)

Описание: Java BIO programming is the same as the Socket programing. It is available since JDK 1.1, and it is synchronous bocking I/O. If no connection, the *accept* method is used for blocking at the server side. If no data can be read at the client side, the *read* method is used for blocking. In order to support multiple connections, the server needs to create a thread for each client. It is recommended to use Thread Pool to efficiently using the resources.