This tutorial is an introduction to socket programming in Java, starting with a simple client-server example demonstrating the basic features of Java I/O.

A Java developer must also be able to think and code using the declarative functional paradigm. This tutorial presents the basics of functional programming.

If you want to master functional programming, the best place to start is with the Java Function interface. This example will show you four different ways to implement this functional interface in your ...

This tutorial shows JDBC and PostgreSQL used, along with JDBC URLs and downloaded database drivers from Maven, to create simple Postgres CRUD apps.