Classes, fields, methods, constructors, and objects are the building blocks of object-based Java applications. This Java tutorial teaches you how to declare classes, describe attributes via fields, ...

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 ...

Properties and methods make Java classes interesting. Properties represent the data an object possesses, while methods enable the intelligent manipulation of that data. However, to perform any ...

What is the single responsibility principle? The single responsibility principle in Java demands that a class serves a single, clear purpose. Any attempt to add peripheral functionality to a ...