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 ...

“Object oriented” refers to the way that Java code is structured: in modular sections called “classes” that work together to deliver a cohesive experience.

The Java Function interface is quite simple. It takes a single Java object as an argument, and returns a single Java object when the method concludes. Any method you can conjure up takes an object and ...

Although Java lacks a true sizeof () equivalent, the Instrumentation interface introduced with J2SE5 can be used to get an estimate of the size of a particular object via its getObjectSize (Object ...

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.

Learn about serialization in Java with our comprehensive tutorial. We provide examples to help you understand how serialization works.

The array object in the Java programming language supports a built-in method for sorting objects. An array of strings named "words," for example, can be sorted by calling the "Arrays.sort (words ...