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 ...

This post explains how to use classes in Java to build objects and organize your code. Also learn: constructors, static methods, and more!

Joe Darcy's recent post What methods should go into a java.util.Objects class in JDK 7? could be the beginning of bringing back some enthusiasm regarding JDK 7.

This post explains how to call a method in Java. Learn how to define methods, call them from other classes, and pass arguments!

Class Library and Application Framework Implementation Once the design of the class library/application framework has been established and reviewed (typically through a peer-review process), the ...

Sealed classes in Java let developers limit the creation and use of subclasses and preserve the class hierarchy. Here is how sealed classes in Java work.