Learn how to use a web API from within an Android app using Retrofit. Get posts from social media, store data on the cloud, and much more!

The functional consumer interface is a key part of the Java Streams API. Here is a simple Consumer interface example to show you how to use this Java component.

Virtual threads in Java currently lack integration with the stream API, particularly for parallel streams. Here's how a JDK 22 preview feature addresses the problem.

Get to know the Java persistence standard based on Hibernate and learn how to use JPA to store and manage Java objects in a relational or NoSQL database.

Learn how to use synchronous and asynchronous callbacks in Java—including callbacks with lambda expressions, CompletableFuture, and more.