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 ...

Java SE 15 (Sept 2020) introduces sealed classes as a preview feature ... using the full generality of objects to model data requires both a lot of low-value work and worse, can often obfuscate ...

Traditional Java concurrency is managed with the Thread and Runnable classes, as shown in Listing ... can be more easily transitioned to the new model. A simple example of using virtual threads ...

For this Java serialization tutorial, we will to create a simple Score class. This class will model the score of a rock-paper-scissors game, with properties that count the number of wins, losses and ...

The type system, object model and exception-handling model are also simpler ... This is needed because it is common to write Java classes containing a main method that can be used for testing or small ...

An actor is similar to a class in object-oriented programming ... Akka A popular framework with SDKs for in Java, Scala and .NET. Microsoft Orleans An Actor Model framework created by Microsoft, also ...