One of the features that make Java so powerful, is its object-oriented structure. This means that Java uses classes and objects to create more scalable, modular, and organized code. This can be a ...

Classes and objects in Java must be initialized before they are used. You’ve previously learned that class fields are initialized to default values when classes are loaded, and that objects are ...

RESTful clients can update the score by invocating the same URL through a PUT invocation while also passing query parameters. Again, the program will return a JSON-based representation of the score ...

Test-driven software must often drop, create and populate database tables with records before it runs a suite of unit tests. For this reason, the ability to have JPA frameworks -- such as EclipseLink ...

The core idea behind JPA as opposed to JDBC, is that for the most part, JPA lets you avoid the need to “think relationally.” In JPA, you define your persistence rules in the realm of Java code and ...