Modern operating systems can support extraordinarily large volumes of users, but run into limitations with threads to support them due to CPU and memory constraints. Java historically has dealt with ...

A callback operation in Java is one function that is passed to another function and executed after some action is completed. A callback can be executed either synchronously or asynchronously. In the ...

A Web API is an online “application programming interface” that allows developers to interact with external services. These are the commands that the developer of the service has determined will be ...

The Jakarta Persistence API (JPA) is a specification that defines a standardized framework for data persistence. Persistence is the fundamental mechanism for saving and retrieving data over time. In ...

As software development teams get larger, application packaging and deployment tasks become much harder. Handwritten scripts and low-level JDK utility calls just don't scale as teams grow, which is ...