This document provides an overview of Java sockets including how they allow for client-server communication over networks, the lifecycle of a socket server, and code examples for a socket server and clients. It discusses how sockets provide connection-oriented and connectionless services in Java using classes like ServerSocket and Socket. Diagrams depict the use cases and classes for a socket server that handles weather requests from multiple clients. Code for a WeatherSocketServer class and examples of client requests are also included.