Finally, you’ll see an example that demonstrates Java networking as implemented from Java 7 forward, in NIO.2. Socket programming boils down to two systems communicating with one another.

Java 7 application= Node 1 (JVM booted to use SDP) uses the java.net.Socket API to write a block of application data across the network to a java.net.ServerSocket listener.

The java.net package provides classes and interfaces for writing programs that use either TCP or UDP. Applications communicating with TCP use the URL, URLConnection, Socket, and ServerSocket classes.

From the paper: This paper presents Java Fast Sockets (JFS), an optimized Java socket implementation on clusters for high performance computing. Current socket libraries do not efficiently support ...